GH - December 2020 by annexbusinessmedia

NEW PRODUCT

substrates. By: Dr. Brian Jackson

BY DR. MICHAEL BROWNBRIDGE

PHOTO CREDIT: M. MIRZA

PHOTO CREDIT: B. JACKSON

FROM THE EDITOR

GRETA CHIU | @GreenhouseCan

Ending on a nostalgic note

It was exactly 40 years ago, in December 1980, that Greenhouse Canada was first published in newsprint by Growth Publications, under the guidance of then publisher/editor Jim Brown.

us to share knowledge and stories to unite the horticultural sector from coast to coast.

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...there was discussion around greenhouse raspberries in 1999.

In the December 2015 issue of Greenhouse Canada, my immediate predecessor, Dave Harrison, wrote two important in-depth features: one documenting the first 35 years of the magazine and another highlighting industry growth in those three-anda-half decades. If you haven’t yet read them, I would urge you to comb through our digital editions and take a look. If you’re someone who’s relatively new to the sector like me, then what you find might astound you. For instance, back issues discussed “the impending challenge from South American carnation growers and rose growers” in 1985, and there was already discussion around the potential for greenhouse raspberries in 1999. An issue in 2005 paid tribute to Lois Hole, and 2007 welcomed nowfamiliar columnist, Gary Jones. But if you’ve been around the block a time or two (or three), then you’ll likely re-read the features and bask in the warm glow of how much the Canadian greenhouse sector has grown. Or, you might have some suggestions for the next anniversary feature.

For this month of December, Greenhouse Canada is officially celebrating 40 years in print. You’ve seen it mentioned throughout the year now – on the cover, at Grower Day, in Gary’s column, or perhaps even by word of mouth. The magazine owes its continued success to its readers, expert contributors and advertisers. Thank you for continuing to support this Canadian publication, allowing

In this issue, you’ll find a number of features recounting important milestones, including business anniversaries and retirement celebrations. Each offers a glimpse of how much the sector has evolved. You’ll also find an anniversary feature looking back on pivotal moments of the past four decades and how they’ve impacted the greenhouse sector today, accompanied by commentary from some of the industry’s longest standing voices. To go about this feature, we asked our experts to identify their top four industry innovations or moments that had the greatest impacts on the sector. It was an impossible task – there were simply too many. Some important points that weren’t specific to the industry received notable mention or narrowly missed the cut. The availability of the internet in ‘93 is a particularly good example. As Gary mentioned in his comments, it had a massive impact on marketing, sales, instantaneous information, and more. “The list is endless. And of course, its influence will likely be timeless.” COVID-19 was another important one, but we’re saving that for the impending state of the industry report coming in January. 2021

Also fitting for this issue are guest features on some of today’s key topics, including cannabis production and growing in wood substrates. You’ll also find the annual buyers guide, which, according to Dave’s feature, debuted in 1981.

As we head into 2021, don’t hesitate to drop us a line and let us know what you think. Here’s to another 40 years together.

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CEBA deadline extended

Growers who have been operating out of a nonbusiness banking account can now access the Canada Emergency Business Account (CEBA)

CEBA provides interest-free loans of up to $60,000, expanded from the previous $40,000 limit. Over 85,000 farm businesses will have access to the interest-free loans of CEBA, which equates to up to $5.1 billion – one-third of which is forgivable.

To be eligible, businesses must have been

operating as a business as of March 1, 2020, must successfully open a business account at a Canadian financial institution that is participating in CEBA, and meet the other existing CEBA eligibility criteria. The extended deadline to apply for CEBA is December 31, 2020. Businesses will be required to show the impact of COVID-19 on their operations. CEBA is available at 200+ financial institutions.

Source: Agriculture and Agri-Food Canada

EMERGENCY ON-FARM SUPPORT FUND

Applications are being accepted for the Emergency On-Farm Support Fund. The federal investment totals $35 million, providing non-repayable funding for emergency COVID-19 response activities. This includes improvements to living quarters and work stations, personal protective equipment, sanitary stations, and other health and safety measures.

For Alta., Sask., Man., N.B., N.L., Y.T., N.W.T.

and Nun., the fund is delivered by AAFC and cost-shared 50:50 with applicants up to $100,000.

For Ont., OMAFRA is delivering funds through the existing Enhanced Agri-food Workplace Protection Program. Claimable amounts for preventive expenses have doubled to $15,000 and there is a new category for small capital projects of up to $100,000.

For N.S., the fund

Input sought on TFW ag stream requirements

To help establish minimum requirements for employer-provided accommodations in the TFW Program across Canada, the federal government is inviting input from employers, workers, worker support groups, and other interested parties.

Feedback will be accepted until December 22, 2020 on proposed accommodation requirements in the TFW Program’s primary agriculture stream.

The government is also seeking feedback on potential approaches to strengthen oversight of worker accommodations, both prior to and after workers’ arrivals. The consultations will go towards developing a long-term approach to improve living conditions for workers.

Interested parties should email Employment and Social Development Canada at NC-TFWP-APTPTET-EPA-GD@hrsdc-rhdcc.gc.ca or reach out to your provincial grower association.

covers up to 75 per cent of eligible project costs – maximum $50,000. Applications due December 31, 2020.

For B.C., the fund is administered by IAF and cost-shared 50:50 with applicants up to $100,000. Applications closed Nov 17, 2020.

For P.E.I, applications are accepted through the PEI Department of Agriculture and Land until January 15, 2021. Contributions will be cost-shared 50:50 with applicants, up to $30,000 per farm.

For Que., applications will be accepted through FADQ from December 14, 2020 to February 26, 2021. Provincial regulations may differ in retroactive eligibility. Another 10 per cent may be provided to women, youth, visible minorities, Indigenous Peoples, and persons with disabilities, amounting to a 60:40 split. Contact administrator for details.

BY THE NUMBERS

Cannabis snapshot in July

9,628,026 packaged units of cannabis were sold across Canada for medical and non-medical purposes:

Source: StatsCan, 2020

In Canada, an adult may possess up to 30 grams of dried cannabis or its equivalent in public, which is equal to:

Licensed areas for cannabis cultivation:

Microcultivation for greenhouse growers

Here’s what you need to know.

Greenhouse growers are in a prime position to take advantage of a new class of legal cannabis production, called “Microcultivation”. The costs are less, the security requirements are less, and the regulatory requirements are (slightly) less. The limits differentiating “micro” licences from standard licences have been established as grow space (200 m2) for growers, or weight (600 kg dried cannabis) for processors within one calendar year. Here are some considerations to take into account:

1. Security clearances are required: Business owners, investors and some staff are required to have clearances. Each clearance costs $1,690.

2. Application: An account on the Cannabis Tracking and Licensing System (CTLS) is need for applications; the fee for micros is $1,675.

3. No residences allowed: Regulations prohibit the conduct of any licensed activity in a dwelling or house – that means no growing, no trimming, no drying, no storage, and no packaging in your home. You could probably get away with printing labels on your home printer, but that’s it. You will need a separately secured facility – a fenced greenhouse and locked shop – in which to conduct ALL your licence-related activities.

4. Size of grow area: The maximum size of an indoor or outdoor grow for a microcultivator is 200 m2, or approximately 2,150 sq. ft. – roughly 30’ x 70’. That’s pretty small, but micros are packing between 100 and 300 plants in that space. If you get one kilogram dried per plant and sell for extracts at $.80 per gram, 100 plants will gross you $80,000. Not bad for an extra 200 m2 of space and some fencing! Minimum fee per licensed site is $2,500. The annual regulatory fee is 1% of revenue below $1 M, 2.3% on revenue beyond $1 M.

5. Secured perimeters: You will need perimeter fencing with locks on the gates to get licenced, More importantly, it protects your crop from theft. Inside a greenhouse, something like portable construction fencing panels with a padlocked gate is ideal and relatively inexpensive.

6. Pesticide requirements are rigid: Basically,

no pesticides are approved because it could be harmful if inhaled by an immune-compromised individual. Biological controls are in wide use, with mixed results. Bugs carry their own microbial contaminants along with them, and can add to the microbial stew that can fail a crop in analytical testing.

7. Storing/processing facilities: Regulations state that regardless of whether you grow indoors or out, harvested cannabis would need to be trimmed, dried, and stored indoors in a GPP-compliant facility. It means a secured space with no exposed wood, non-porous surfaces that can be easily scrubbed, and nothing (like drywall) that can crumble or flake off to contaminate the product. There are lots of solutions in use. From a renovated sea container, to a retrofitted garage or shed, there are lots of good inexpensive alternatives to building new.

Costs, security, and regulatory requirements are fewer or less.

8. SOP requirements: Wait! What are SOPs?! Standard Operating Procedures need to be written for every aspect of a cannabis business, including security, inventory tracking and quality assurance. However, just writing the procedures is not enough. SOPs are constantly changing documents, which require review and revisions as necessary. Once written, staff need to be trained on the procedures and monitored to ensure they are following them and doing so correctly. In other words, you need an SOP for SOP’s as well – welcome to the World of Regulatory Compliance! The best option here is to purchase a proven microcultivation DIY SOP and application kit. There are several in the industry, offering varying degrees of success.

Tamara Follett was the fifth microcultivator to be licensed by Health Canada, the first female-owned micro in the nation, and the first in New Brunswick. Her “facility” covers 2 acres and consists of three small rustic greenhouses and a refurbished single car garage. Find out more by visiting SunLeafMicrocultivation.ca. For more information and discussions on obtaining a Health Canada Microcultivation Licence, visit the author’s Facebook group, Microcultivation for Farmers and Greenhouse Growers: https://www.facebook.com/ groups/763031217761638

FOUR DECADES of change and innovation

Pivotal moments in 40 years of Canadian greenhouse history.

BY GRETA CHIU

To commemorate 40 years of coverage, Greenhouse Canada reached out to some of the industry’s longest standing specialists to highlight pivotal moments in greenhouse history. Here’s what they had to say.

STRUCTURES AND PRACTICE

For tomatoes, the early to mid-90’s were characterized by a series of structural and production changes that allowed rapid economic growth, paving the way to U.S. markets. “That’s when the sector really started to move forward,” says Shalin Khosla, former greenhouse vegetable specialist with the Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA)

During this time, greenhouse vegetable producers adopted rockwool, hydroponics and double-poly greenhouses at an exponential rate. Researchers successfully bred for resistance against fusarium crown and root rot into red tomatoes, allowing producers to diverge from a limited market for resistant pink tomatoes.

Methods for vegetable production evolved again in the 2000’s with the emergence of troughs. “First came tomatoes because of the ease of handling and better [greenhouse] climate,” says Dr. Mohyuddin Mirza, long-time greenhouse consultant in Alberta. Cucumbers closely followed, moving away from the older ‘V’-system to embrace high-wire production.

Aided by higher greenhouse roofs with tempered glass and more efficient coverings that appeared from 2000 to 2010, both greenhouse vegetable and ornamental growers benefited from rapid improvements in light transmission and diffusion, heat retention and air movement.

ENERGY MANAGEMENT

tanks continue to be “must-have” items for large-scale greenhouse development, says Gary Jones, faculty member at Kwantlen Polytechnic University, B.C. “This technology has had, and continues to have a significant return on investment…”

In line with global outlooks, the current goal is to achieve carbon-neutrality. “Hopefully by 2050, we’ll be able to come close,” says Mirza.

AUTOMATION

No more manual dials of the thermostat or chain-pulling to open vents. Climate computers emerged in the late 70’s and early 80’s, but progressed to more sophisticated software and a wide range of accompanying sensors in the early 2000’s. “It allowed [growers] more time to work in the crop rather than adjusting vents and heating,” Khosla says. Relying on data, the computers provided efficiency and consistency in the greenhouse environment to improve production and resource use.

ABOVE

“When I started... 50 cucumbers/ m2 was the standard,” says Mirza, “But some are now [at] over 280 cucumbers/m2.” The emergence of energy-managing technologies such as climate screens certainly helped, but grower knowledge of when and how to use them also played a large role.

The very first issue of Greenhouse Canada, dated December 1980.

Generating electricity, heat and carbon dioxide all in one package, co-generation was a big development for Alberta and other parts of Canada. Mirza recalls the use of smaller generators around Medicine Hat, Alta. in the late 90’s and early 2000’s. The interest was clearly there, but it wasn’t until 2015 that the technology became more prominent among greenhouse vegetable growers.

Along the same lines, flue gas condensers and ‘heat dump’

With increasingly sophisticated communications networks in place, growers can send and receive information and data analyses in real-time, adds Mirza. Is the crop under stress? Immediate changes can be made to the greenhouse climate from a mobile device.

As noted by both Greenhouse Canada’s former editor Dave Harrison and Québec greenhouse consultant Michel Senécal, the move towards automated systems has helped lower costs and ensure more uniform and consistent yields and quality. “Whether for internal transport in greenhouses, workers’ tasks, product deliveries (flowers, vegetables, etc.), inventory management, greenhouse climate management, etc., these innovations have significantly reduced production and labour costs,” says Senécal.

Artificial intelligence is also lending an additional perspective. With the many sensors and data being gathered, management and analysis is now critical. “You can monitor the plant more closely, to synthesize data together, give reasons for why your plant might not be performing,” says Mirza.

NEW CROPS AND BREEDING

Seedless cucumbers appeared in the early 80’s, followed by peppers in the early 90’s. Along with beefsteak tomatoes, these three crops largely dominated the greenhouse vegetable sector well into the late 90’s.

PHOTO CREDIT: E.

AULTS, ROYAL BOTANICAL GARDENS

“But that soon changed with the introduction of mini varieties, cluster tomatoes, strawberries and eggplant,” says Harrison. “New crops mean new customers,” and growers continue to explore the cultivation of new crops under cover.

For floriculture, the 2000’s saw a surge in garden mums bred with excellent habits, but their lost hardiness relegated the crop to fall pot production, says Melhem Sawaya, veteran greenhouse consultant in Ont. The number of poinsettia varieties also rose rapidly, with over 200 varieties now available on the market.

Over the last ten years, different and unique crops began taking the place of old favourites. Growers started adopting nursery cultivars, such as flowering shrubs, and repackaging them for containers and gardens, says Sawaya. Impatiens almost completely disappeared from the market due to downy mildew, though new breeding has promised to resurrect the crop. Recent cross-breeding in begonias has led to a surge in its use as bedding plants, particularly as breeders prioritize for vigour.

POLLINATION AROUND-THE-CLOCK

Unable to import bumblebees being used in European greenhouses, Canadian researchers worked to capture, breed and domesticate native bumblebee populations in the late 80’s/early 90’s. One species worked particularly well in the eastern part of the continent. Trialled for just one season prior to commercial adoption, “that was one of the fastest technology transfers that occurred,” says Khosla.

Previously, growers would use the electric bee, a toothbrush-sized apparatus to vibrate each individual flower. Agitating pollen from the anthers for a greater chance of contact with the stigma, this process was conducted between 10am and 2pm each day. But once the bees arrived, they took on the job 24/7, says Khosla. Good pollination also led to more uniform fruit shape and size from start to finish. He estimates that the bumblebee’s arrival improved production by five to 10 per cent.

LIGHTING AND YEAR-ROUND PRODUCTION

Some of the earliest lighting work on cut roses was led by Dr. Jim Tsujita at the University of Guelph, recalls Sawaya. Sparse LED use started to surface in floral production in the 90’s, but it wasn’t until the 2010’s that lighting was adopted on a larger commercial scale.

“Production seasons used to largely reflect natural light levels and meant winter shut down,” says Harrison. “But research on lighting has led to more growers able to consider year-round production, something so critical in assuring retailers they can expect greenhouse produce virtually year-round.”

In Ontario, supplemental lighting has allowed for winter production, opening new markets and gaining market share. Productivity increased 1.5 to 2 times for cucumbers, and 15 to 20 per cent in tomatoes, says Khosla. Light research for peppers started in the late 2000’s and improved production by 10 to 20 per cent

While metal halide and high-pressure sodium fixtures were, and continue to be, used in floriculture and vegetables, a new form of lighting is taking centre stage.

The low-energy input of LEDs makes “year-round vegetable production a real possibility in many places that could otherwise not entertain the idea,” says Jones. “[It] has spawned a whole new area of science in developing light recipes specific to individual crop species [and management of] … previously unthinkable plant characteristics….”

While producers experiment with a mixture of top HPS and LED interlighting, says Mirza, one Albertan grower has successfully grown tomatoes under LEDs for the past four years. It’s also increased yields, adding 4 to 8 kg/m2 to yearly totals.

What’s holding LED back from largescale adoption? High initial costs and a lengthy return-on-investment period, says Sawaya. But once the technology becomes more affordable and established, he adds, “I can see some of the imported [floricul-

LEFT

Greenhouse Canada through the ages

ture] stock materials from Africa and South America being produced locally at a lower cost and with better quality, even though labour costs are much higher here.”

Jones relates the rise of urban agriculture to horticultural innovations such as LEDs, along with keen interests in renewable energy and local food production. “[Urban agriculture] has seen a gradual creep into the everyday consciousness over several decades, but really exploded in the last decade in large cities here.”

PLUG PRODUCTION

Near the end of the 70’s, a new ornamental technique emerged in the form of plugs. “The idea that each seed be sown individually in a cell in a multicellular tray was revolutionary at that time,” says Senécal, who attributes the work to David Koranski, Roger Styer and Melhem Sawaya. “Producers quickly adopted this technique, which has become the standard even today.”

Machines used for seeding plug flats followed in the early 80’s. With these mechanical transplanters, a crop and a half was easily achievable, says Sawaya.

Another hallmark of the 80’s was Impatiens walleriana, a new crop that took the sector by storm. “[In] some greenhouses, 70 per cent of their flat production was Impatiens,” says Sawaya, “and [it] was the first item to run out.” Growing Impatiens was relatively straight forward, and it greatly simplified production for those cultivating a large proportion of it. “The synergy of producing plug flats under [metal halides] cut production time drastically [and produced] a better-quality product for the consumer,” says Sawaya. They made up for the increasing costs of labour, production and transportation at the time, without needing to increase prices.

BIG BOX STORES AND MARKETING

Marked by the opening of Home Depot in 1978 and Costco in 1983, big box stores opened up retail sales on a large scale, providing growers with mass volume customers and allowing economies of

scale that were unknown before, says Jones. “Their influence on market trends is enormous. But…they also have had a massive influence on prices with deep discounting and a consequent influence on margins,” impacting the consolidation of the industry.

A surge in vegetative cuttings appeared in the 90’s, promoting greater uptake of larger container sizes to absorb the higher plant material costs, says Sawaya. Bedding flat production dropped while patio containers rose. A combination of production efficiency and lower retail prices led to production based on speculation and resulted in oversupply.

In comparison, the 2000’s saw more production programs taking place between buyers and growers in Ontario, says Sawaya. There was less speculation and more production to order. This period also saw the emergence of consumer-facing brands, such as Proven Winners, Simply Beautiful and Flower Fields, as well as pay-by-scan among certain chains.

More recently, COVID was, and still is, having a large impact on ornamental consumption. Foreign workers, consumers, containment, open or closed retail shops and garden centres – it was a flurry of activity, says Senécal.

“COVID-19 made us realize how much consumers love plants and gardening,” says Sawaya. By equipping the consumer with quality product and the right knowledge for plant care success, he hopes this will help keep this momentum going.

BIOCONTROL, BIOPESTICIDES AND PREVENTION

“Biological control with predators and parasitoids appeared more commercially towards the end of the 1980’s,” says Senécal. Later in the early 90’s, the use of biopesticides emerged, encom-

Greenhouse consultant marks 30 years and counting

Known consultant, trial coordinator and advocate for the floriculture sector celebrated milestones with growers.

BY GRETA CHIU

Veteran greenhouse consultant Melhem Sawaya celebrated his business’ 30th anniversary with his closest customers, friends and family last fall.

“I am thankful to everyone who attended,” says Sawaya. The founder of Focus Greenhouse Management, Sawaya has worked with and garnered the respect of many greenhouse floriculture producers in Ontario for over three decades.

A known supporter and vocal advocate of the horticultural industry, Sawaya is involved in a number of initiatives, such as programming for the Canadian Greenhouse Conference and Grower Day, as well as regularly contributing to Greenhouse Canada magazine. He’s also coordinated the annual Sawaya Garden Trials in Simcoe, Ont. for the past 20 years. What first began with 150 varieties, the

trials now showcase over 3,000 annually, allowing growers to see how new varieties perform in the southwestern Ontario climate.

“I just want to say how much we appreciate your friendship,” says Andy Vander Hoeven of Vander Hoeven Greenhouses, echoing the sentiments of many other growers who attended that night. “You’ve been a real confidant to us. Just a real treasure. We really appreciate everything.”

Originally from Lebanon, Sawaya exhibited his entrepreneurial spirit from an early age. At 17, he built a tennis court and started Sawaya Tennis Courts in his hometown, clearing the area of trees with his own hands. It’s been well-loved by locals and formed the seed for a whole generation of excellent tennis players in town and within the

TOP Sawaya celebrates three decades with customers who have become friends.

BOTTOM Ken Tigchelaar shares fond memories and takes part in some light roasting.

Right team. Right products.

Neudorff North America is an innovative leader in ecologically responsible pest solutions for nursery and greenhouse growers, farmers and turf professionals.

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CUEVA

Powerful disease protection for your greenhouse vegetable and ornamental crops with a fraction of the copper found in other copper fungicides.

Fast-acting insecticidal soap. Controls aphids, mites and whiteflies on ornamentals, herbs, spices, vegetables, including cannabis. Effective as a cutting dip to control whitefly nymphs.

A summer and dormant oil. Controls all life stages of insects and mites. Suppresses powdery mildew of greenhouse ornamentals, fruit, vegetables and cannabis grown indoors.

Fact acting. Controls moss, algae and liverworts in and around greenhouses.

A durable pelleted iron phosphate bait. Provides excellent protection of greenhouse crops from slugs and snails.

A durable, fast-acting pelleted spinosad bait that is active against a wide range of ants in greenhousegrown vegetables and ornamentals.

Inside and outside. Neudorff protects.

immediate family, he says. Sawaya Tennis Courts continue running to this day.

At his sister’s insistence, Sawaya enrolled in a university pre-med program, but he quickly realized that this wasn’t the right choice for him. Looking at the courses he took – chemistry, biology, and math – he realized he could apply these same credits to a different program. “That’s how I ended up in horticulture.”

Never one to take the road well-travelled, Sawaya embarked on a student-exchange program to Canada where he met his future wife Maureen – on a tennis court. Eventually, the couple began thinking about starting a family, but Sawaya’s migrant status didn’t help on the job front and making 35 cents an hour was no way to support a family. “I sent out around 70 applications – not even an answer,” he says, describing an experience that many foreign professionals still run into today. By taking courses and making connections at the University of Guelph, he was eventually offered a job at Fernlea Flowers.

“I started as a water boy,” he recalls, before progressing through the ranks to manage different areas of production. Seeing a need, he started grower supply company Pro Gro under the umbrella of Fernlea Flowers, supplying grower products to other producers.

After 12 years at Fernlea Flowers, Sawaya decided to try the consulting business, filling a need that he saw in the industry. Starting at a 50 per cent pay cut in the first four months, the business

exceeded his expectations in the next six, confirming that his decision was the right choice. At one point, Sawaya says, he was working with 55 different operations, amounting to approximately 90 per cent of the greenhouse floriculture volume in Ontario. “It is now down to 44 operations because some customers sold to cannabis,” he says, sticking by his decision to not work with cannabis operations.

“Through the shift from Fernlea to consulting, I would not have been able to do it without the support of my wife,” he says of Maureen, with whom he would be celebrating their 43rd anniversary together this year.

“My mom used to count the slices of bread to make sure there’s enough sandwiches for the week so we can go to school,” says Sawaya’s daughter Lara, a professional event planner and entrepreneur who organized the evening’s festivities. “That’s how you support your family business.”

“I learn from every situation. The bad ones make me stronger and the good ones make me thankful,” Sawaya says. Acknowledging everyone in the room for their years of support and collaboration, he expressed his gratitude to Fernlea for

taking a chance on him and continuing to work with him today, making them the longest-serving customer he’s worked with at 42 years and counting. Always thinking of the horticultural sector, he adds, “Don’t be afraid to ask for help… and don’t be afraid to lean on the strengths of others.”

Whether it’s his family or his clients, Sawaya puts people first and treasures every moment – a fact that is evident in his photography and the camera that never leaves his side.

“He lives his life behind the lens,” says Lara. “I think our whole life was ‘What do you want for breakfast?’ Click. ‘What time are you getting on the bus?’ Click. We have more printed photos than I think any child or family should have. But we’re grateful for it.”

“After all, a picture is better than a thousand words,” adds Sawaya. “Especially for a guy [who speaks] English as his second language.”

Over 150 people were in attendance at the 30th anniversary event for Focus Greenhouse Management, held in Brantford, Ont. in October 2019.

For more photos from the celebration, visit greenhousecanada.com

TOP Sawaya with children and their spouses: Nadia, Tom, Dave, Lara, and Thomas. BOTTOM Sawaya, Peter Van Beurden and Sawaya’s wife Maureen.

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Organic soil conditioning for rapid crop growth

Jean-Pierre Fortin

ver the past few years, demand for organic products has continued to rise, so much so that organic crops can now be found in all industry sectors including fruit and vegetable production, ornamental growing and even cannabis farming. By promoting healthy nutrition and ecofriendly practises, the organic growing philosophy has decidedly become the trend of the future. Nevertheless, embracing this trend for commercial crop production does have its share of challenges…

Fertilization: the Achilles heel of organic growing

In organic growing, preference is given to natural and organic fertilizers. Although these perform as well as their synthetic counterparts, plants do not easily assimilate the essential elements they contain. How to rectify this situation and make the most of your organic soil? With conditioning!

What does organic soil conditioning involve?

Organic soil consists of natural ingredients. It contains elements that are essential for plant growth deep inside its structure, making them difficult to access. Conditioning helps to trigger nutrient mineralization. It also activates the growth of microorganisms, which process the nutrients into a form that can be absorbed by the roots and assimilated by the plant.

Why is conditioning good for organic soil?

There are several benefits to organic soil conditioning, for instance under the following circumstances:

It compensates for shorter crop growth and short time to market

Products like tomatoes and peppers are long crops, giving the mineralization process the time it needs to unfold.

Inversely, leafy vegetables, fine herbs and sprouts make their way to supermarket shelves after just a few weeks – before mineralization is naturally triggered in time to satisfy short crop needs.

It synchronizes the availability of these elements with crop growth

Leafy vegetables need a lot of nitrogen over a short time. Tomatoes need a steady supply of nitrogen however they need a lot of potassium during fruit production. Sprouts need all the elements over a period of 2 to 3 weeks. Conditioning allows the elements to be mineralized as needed.

It enables the more sustainable and ecological management of natural resources

Several producers satisfy the immediate needs of their organic crops by increasing their organic fertilizer application in a way that is disproportionate to actual needs. Conditioning helps to reduce the quantity of fertilizer used by increasing the availability of the elements already present.

It promotes access to nitrogen

Nitrogen is among the most – if not the most –recalcitrant in terms of organic availability. Nitrogen is mainly imprisoned in proteins and amino acids. Proteins are in fact composed of chains of relatively complex amino acids. Every amino acid traps at least one nitrogen molecule. This nitrogen only becomes available if the protein chains and the amino acids that compose them are hydrolyzed. Hydrolysis is an enzymatic reaction that splits the proteins and amino acids. The microorganisms lead this process, drawing their nutrients and energy from many organic molecules including the proteins they break apart. The nitrogen is freed by the end of the process in an ammoniacal form not used by plants. Another class of microorganism, nitrifying bacteria, can convert ammoniacal nitrogen into nitrate, which is easily absorbed and assimilated by plants.

How to condition organic soil?

To effectively condition the soil, we need to stimulate the microorganisms by providing them with an environment and with nutrients conducive to their growth.

Oxygen

Just like humans, bacteria draw their energy from breathing, which involves burning carbon hydrates (sugars). They have a constant need for oxygen.

Water

Hydrolysis occurs in the presence of water. In fact, one water molecule is used during each step of decomposition. Water is also essential in maintaining the cellular structure of

bacteria and it participates in numerous metabolic reactions. A water supply is essential to microorganism development.

Temperature

Just like plants, microorganisms perform best at specific temperatures. Temperatures above 28 °C are preferable for certain species. Nonetheless, studies show that mineralization occurs rapidly between 20 °C and 25 °C.

pH

Although some microorganisms can accommodate a pH that is either very low or very high, optimal pH for mineralization is between 7.6 and 7.8, which is more alkaline. The bacteria involved in the process are nonetheless able to adapt to the soil’s pH (5.5 - 6.5).

Time

Time is the final factor that contributes to successful conditioning. The microorganism population must peak to ensure an effective mineralization rate. It takes a minimum of 2 weeks to achieve optimal cruising speed.

NITROGEN GENERATION USING ORGANIC FERTILIZER

What can we expect from conditioning?

Studies have demonstrated the effectiveness of conditioning. We compared the analyses of unconditioned organic soil to soil conditioned for 2 to 4 weeks. The results were conclusive, indicating low nitrogen levels in the unconditioned soil. Moreover, this nitrogen was nearly entirely present in ammoniacal form. Testing revealed 2.5 times more nitrogen at the end of 2 weeks of conditioning. Additionally, 90% of the nitrogen was in nitrate form. Conditioning prior to use helps to release the nutritional elements in a form that can be directly assimilated from the time of planting.

What are the steps to conditioning?

Conditioning involves four steps: remove the soil mix from the packaging; moisten it until its humidity level reaches between 60 and 80% (on a weighted basis, water weight/soil weight); leave it to swell to incorporate oxygen; and let it rest long enough for the mineralization process to occur.

As illustrated on this graph, the feather meal was incubated and regularly tested to monitor the nitrogen forms following the mineralization process.

Ammoniacal nitrogen was clearly the first nitrogen form to register. The nitrogen was converted into nitrate only after 2 to 3 weeks of incubation.

For long crops, conditioning can take place directly in growing containers or tubs. For medium duration crops (potted fine herbs, vegetable plants, leafy vegetables), the containers can be filled up in advance, stored, and kept moist for planting. Finally, short crops require more organization. For these, the soil must be stored under proper conditions until the germination trays are planted. Ideally, a special soil conditioning space could be organized near the potting room. The size of this area should correspond to required weekly volume.

Conditioning is an additional step in growing preparation, but it is vitally important because it helps to guarantee the crop’s efficiency and success!

Jean-Pierre Fortin is a Growing Media Technical Expert for Scotts/Hawthorne.

Taking on pests and diseases in cannabis: The propagation stages

BY DR. MICHAEL BROWNBRIDGE

The cannabis sector is a young and vibrant part of the horticulture industry. With legalization across Canada, opportunities to grow the crop at scale emerged overnight. This has brought significant challenges as growers adapt from ‘basement growops’ to multi-acre facilities. Because cannabis has some unique features that it shares with many other greenhouse crops, growers can transfer some well-established IPM technology from other horticultural sectors to prevent many of the pests and diseases they have in common.

SCOPE AND PURPOSE

The intent of this two-part article series is to provide information on pest and disease management tools that are currently approved for use in Canada. It does not cover a wish list of products and materials that could be used. Serving as a companion to the Greenhouse Canada webinar presented in September 2020 (greenhousecanada.com/webinars), this article series addresses common production issues and available solutions at each stage of crop development, allowing us to consider ways in which they may be prevented or managed at that point in time. This is especially important as the use of a biopesticide/biocontrol agent in one stage may differ from how it can be applied in another. Furthermore, successful use in one stage inevita-

bly impacts what occurs at the next. In this way, I hope to bring more of a ‘whole program’ approach to pest and disease management through the lifecycle of the crop, from propagation to harvest. And last, the methods discussed are essentially for indoor production of cannabis – greenhouse or grow facility – but the methods described for propagation can be applied to production of transplants for either outdoor cannabis or hemp.

Now that that’s out of the way, where to begin? To avoid diluting the information by trying to cover too much, the focus is on implementation of functional IPM programs for cannabis, highlighting use of biopesticides and biological control agents, considering the best fit of the different components, and how they can be integrated into a crop protection scheme.

THE IMPORTANCE OF PLANT NUTRITION IN IPM

Let me first digress a little to stress the importance of plant nutrition in IPM, as it has a direct impact on plant health. By optimizing growing practices, we create a more resilient crop that is not only more productive, but inherently less prone to pests and diseases. However, high nitrogen levels in plant tissue can also dramatically increase plant susceptibility to pests and diseases. This has been

shown in a variety of other crops ranging from cereals, to flowers, vegetables and fruits, and studies have documented a particularly strong correlation between high levels of applied (synthetic) nitrogen fertilizer and growth of pest populations. Populations of pests such as two-spotted spider mite, green peach aphid and western flower thrips will expand rapidly when high levels of synthetic N are applied. This then raises the question – can fertilizer inputs be reduced without affecting crop quality or production time? Can the type of fertilizer inputs be managed to avoid rapid accumulation of high N levels in plant tissues while ensuring sufficient supply for growth? And is there latitude to reduce fertilizer inputs as a means of slowing pest population growth?

We know that plants require different types and levels of nutrients at different stages of development and growth, and essential nutrients (N, P and K) are manipulated to fulfill those changing requirements. In cannabis, some nutrients (particularly N) are ‘pushed’ at flowering to promote larger blooms. But this can compromise plant tissue formation and increase susceptibility to diseases like powdery mildew and Botrytis. Recent changes to Health Canada regulations on the application of nutrients by foliar spray is a significant development as it may allow reductions in salt-based nutrient inputs without compromising yield. Research has shown that application of foliar nutrients at times of peak nutrient demand and prior to stress events (rapid growth, bloom, and flower development, drought, temperature extremes, major changes in light and humidity) will enhance plant stress tolerance. Use of some sprayable nutrients can also enhance uptake and translocation of elements like calcium (Ca), an essential component of plant cell walls. Stronger cells, especially in flowers, can reduce susceptibility to diseases like Botrytis. This has been demonstrated in petunia where susceptibility is linked to poor movement of Ca into flowers and deficiencies increase susceptibility to the disease. Higher Ca concentrations enable more pectic bonds to be formed in flower cell walls, improving resistance to breakdown by enzymes produced by Botrytis, thereby reducing susceptibility to infection by the fungus. This has yet to be tested in cannabis, but observational evidence suggests that use of such nutritional supplements may help combat Botrytis.

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A beneficial fungal product applied during propagation can improve root development in cannabis cuttings and increase yield. (Pictured: trial with Rootshield Plus)

SANITATION AND PREVENTION: CREATING THE RIGHT FOUNDATIONS

Sanitation and prevention are at the heart of any IPM program, especially ones utilizing biological inputs. At its core, biocontrol is a preventative strategy and not a curative one. Biocontrol agents and biopesticides should be applied proactively to prevent pest or disease problems from developing, as opposed to controlling them. This is particularly important in cannabis as there are no (legal) rescue products that can save a crop if pests or diseases get the upper hand.

Looking after mother

What is true in life is also true in cannabis, look after your mother! Sanitation starts from the very beginning of a production cycle. If you maintain your own stock plants, the area in which they are kept should be dedicated to keeping plants healthy in a stress-free, clean growing environment, ideally with systems and mechanisms in place to prevent ingress of bacterial and fungal spores and insects.

Limiting access to the room further reduces the risk of pests and diseases being transferred into the area. Pests and diseases readily hitch a ride on crop workers, so restricting plant care to a few individuals will go a long way to reducing risk. Maintain a strict ‘order of entry’ for those workers. In other words, all work on the mother plants and in the propagation space should be done first before they go into the main production areas. Once entering the production area, there should be no return to the stock plants until the following day. In addition, ask staff whether they grow plants at home. This is a tough question, but pests/diseases do not care and can be transferred via those workers from home to the production facility.

The order of entry and movement of workers will be unique to every greenhouse/grow facility. It is well worth the effort to develop a work schedule that eliminates the potential of pest/disease movement around the facility and enforces restrictions on staff movement to avoid spread. Think of the arrows that are prevalent in supermarket aisles these

days. They ‘encourage’ a unidirectional flow of customers to reduce close contact and aid in social distancing practices as we all strive to reduce the chances of COVID transmission.

Test plants regularly to ensure they are free from viruses and other diseases. Stay on top of bioprograms and sprays to ensure plant health and prevent diseases and pests on mother plants, as they will transfer with clones. Keep mother healthy and happy, and her offspring will get a much better start in life!

Sanitation

When we say ‘sanitation,’ I’m sure many think about this process being solely applied to the production space. And certainly, growing spaces and rooms should be thoroughly cleaned (removing any and all debris) and sanitized after a crop is harvested, and then again before a new crop is brought in. This reduces the risk of pests and diseases carrying over from one crop cycle to the next. But good sanitation practices should be applied in every stage of production.

Send in the clones

The goal of every grower should be to start clean. This will reduce problems later in production. It starts with the mother plants as discussed and extends into the propagation of clones. Hydrogen peroxide-based materials (e.g. ZeroTol) can be used to sanitize tools and surfaces as well as any flats and trays used for the young plants. Don’t forget to sanitize irrigation lines between crops, as biofilm layers can develop inside them and harbour diseases. Stabilized hydrogen peroxide products are extremely effective at eliminating biofilm build-up. After harvest, charge the lines with a peroxide solution (use label rates), leave them overnight and then flush with clean water before using them again. In addition, peroxide can be drenched onto the rooting medium or cubes the day before sticking to sterilize the medium. The beauty of using peroxide is that it breaks down rapidly and leaves no residues. If bringing in clones, then assume they will carry something. I have heard many stories of greenhouses claiming to have had “…no root aphid issues until we brought in clones from…” for example. At some point, especially with recent incidents of virus-infected clones arriving from propagators, I’m sure there will be calls for some form of phytosanitary certification to accompany cloned material, but until and even after such time, sanita-

tion is your best friend. Dips in biopesticides (e.g. BotaniGard) or horticultural oils are ways to reduce or eliminate pests (thrips, aphids, whiteflies, mites) coming in on clones. Can you quarantine clones and new plants to avoid transmission should they be infested? Again, limiting access to personnel and having a specific ‘order of entry’ plan in place can go a long way to reducing movement of pests. Consider sending out samples for analysis (e.g. DNA multiscan) to confirm plants are free from disease before transferring to the main production areas. Yes, there is a cost to this service, but it is minor compared to the costs of control or crop loss.

These are important steps to initiate right from the beginning. Protect your investment.

PROPAGATION

After taking care of mother, you must nurture your babies. Prevention starts here, nipping pest and disease problems in the bud, and taking steps to promote healthy root development. These are important steps to initiate right from the beginning for protecting your investment.

Disease management

Managing root diseases is part of doing business in any greenhouse crop, and cannabis is no exception. Pythium and Fusarium species, for example, are well-known pathogens on other crops and quite happily use cannabis as a host. Unfortunately, they are readily transferred in irrigation water, in soil, and on people, and can easily come in via infected clones. We’ve already touched on some of the sanitation steps that can be taken to reduce inoculum levels on hard surfaces and in propagation media, and it’s also worth testing your water supply to ensure it is free from these diseases. Be sure to test before and after any water sterilization process to ensure it works.

There are also biological tools that can be used to prevent diseases. Beneficial fungi can be used to colonize and grow on developing plant roots, protecting them from many soilborne pathogens. These biocontrol fungi work by bringing several different modes of action to the system. For example, Trichoderma (RootShield) and Gliocladium (Pre-Stop) protect roots through

a combination of antagonism, competition, predation/parasitism, and induction of plant resistance. These tools also deliver other plant benefits, including stimulation of root growth and solubilization of nutrients in the soil so they are more accessible to the plant, promoting plant growth and health. In trials conducted on cannabis, Trichoderma applied at sticking (in the form of RootShield PLUS) resulted in improved root development in clones, which ultimately translated to a 4% increase in flower yield at harvest.

Pest management

In terms of pests, those of primary concern in propagation are mites, aphids, thrips and fungus gnats.

Mites: Right now, three species are problematic in cannabis – hemp russet mite, broad mite and two-spotted spider mite (TSSM). And before you ask, yes, all three often come in on clones. All three species share certain characteristics: they have a high capacity for rapid population increase; they are hard to detect owing to their small size, and the first sign of an infestation may be symptoms of damage, and by then it may be too late to effect control. As we only have tools to prevent pests from increasing, we must act early, using biopesticides to provide a relatively quick knock down, supported by early introduction of biological control agents (BCAs).

Of the biopesticides, mineral oils will control several problem pests including mites (all stages, including eggs), thrips, aphids, and whiteflies. Two products approved for use in cannabis are Suffoil-X and PureSpray FX. Both are based on horticultural oils, but their formulations impart slightly different characteristics to each product. As a sidenote, Suffoil-X is also known to suppress powdery mildew and will complement a foliar biofungicide program. Application rates (1 to 2%) are similar for both products, which should be re-applied every 7 to 14 days. Thorough spray coverage is essential to efficacy.

Use caution when applying to newly stuck cuttings; at this stage, we recommend using the 1% rate and ideally waiting until plants have developed roots before spraying (approx. 7 to 10 days after sticking). Be aware that use of spray oils will leave a sheen on the leaves, but this does not interfere with transpiration. Dipping is also on the Suffoil-X label, and immersion of cuttings in a 0.1% suspension is a very efficient method of cleaning up clones prior to sticking.

BCAs for mites include Amblyseius

andersoni which is moderately effective against hemp russet mite; Neoseiulus (=Amblyseius) cucumeris, a highly efficacious choice for broad mite; and Amblyseius (=Neoseiulus) fallacis which is a good option at this stage in production for TSSM. For hemp russet mite, early treatment of clones by dipping provides the best knockdown of an incoming or resident population, followed by two to three successive foliar sprays. Although oils will kill predatory mites and other BCAs on contact, they leave no toxic residues when dry; that means they will not harm mites in sachets or BCAs released after the spray program has been completed.

Aphids: Rice root aphids can quickly grow out of hand unless you get on top of things early. Drenching rooting blocks with an approved Beauveria bassiana formulation (e.g. BotaniGard 22WP) is a good tactic in propagation. Make sure cubes are thoroughly wetted so that infective Beauveria spores permeate the entire block and come into contact with aphids on the roots. This must be repeated as aphids multiply rapidly. Later in production, root drenches should be accompanied by foliar sprays to target winged adult aphids.

Thrips: I am convinced that western flower thrips can survive on any plant. It might not be completely true, but they can cause a lot of damage in cannabis and often accompany cuttings. There are two fungal biopesticides registered as foliar sprays: BotaniGard 22WP/ES and BioCeres G WP/EC. Several different predators can also be incorporated into a biocontrol strategy. These include N. cucumeris (sachets on sticks preferred) which feeds on first instar thrips on the foliage, as well as soil-dwelling predators Stratiolaelaps scimitus (formerly Hypoaspis miles) and Dalotia (formerly Atheta) coriaria which feed on pupating thrips.

These BCAs provide simultaneous control of other pests, such as cucumeris for broad mites, while Stratiolaelaps and Dalotia feed on fungus gnat larvae. Last, the nematode Steinernema feltiae may be a useful addition to the program if needed, applied as a drench to the rooting cubes every two weeks. It is important to remember that the biopesticides and BCAs are applied to control different life stages of thrips and will remain with the plants when potted up in the main production area.

Fungus gnats: These are perhaps more of a nuisance problem than anything else, but they can passively vector soilborne diseases such as Fusarium, and high numbers of larvae in the growing substrate may cause significant feeding damage to freshly stuck clones. Cultural practices such as not overwatering will help limit populations, and the BCAs used to manage soil-dwelling stages of thrips are equally effective against fungus gnat larvae. Yellow sticky cards used to monitor for flying stages of pests can also make a significant contribution to the overall removal of adult pests, including fungus gnats and thrips.

STAY CLEAN

All being well, investment in good sanitation and prevention practices through propagation will mean that everything is under control as plants move into the vegetative phase of their growth, but you cannot afford to relax. Steps taken in propagation should be maintained. Watch this space for cannabis IPM part 2: vegetative growth phase to early flowering.

Michael Brownbridge, PhD, is a Biological Program Manager at BioWorks Inc. He can be reached at mbrownbridge@bioworksinc.com

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10 things to know about growing in wood substrates

Answers to the most frequently asked questions on incorporating wood products.

BY DR. BRIAN E. JACKSON

With change comes challenges, or at least modifications, particularly when growers consider switching to soilless substrates containing wood products. Over the past 15 years of research on wood substrates, plus countless interactions with substrate manufacturers and growers, I am often asked a similar set of questions. Here are some that I encounter most often:

1) Will wood substrates tie up nutrients and cause nutrient deficiencies? Research has shown that microbial populations are higher in substrates containing fresh wood products (mostly due to higher carbon content) and those microbes are indeed immobilizing nitrogen. However, the good news is that the severity of nitrogen microbial immobilization is not as high (or insurmountable) as once thought or feared. This greatly depends on the wood product’s particle size, its processing and preconditioning, as well as the length of time it remains in a container during subsequent

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production. Nitrogen immobilization issues are also dependent on the percentage of wood added to substrates. Many researchers and growers have found that 20% wood incorporation (in peat) leads to little change in available nitrogen. Above that percentage, and depending on the type and age of the wood, nitrogen can become limited.

Microbes in wood substrates will immobilize nitrogen as well as sulfur and some phosphorus to lesser extents, but so do other organic substrates, just in lower amounts. Growers who naturally fertilize their crops at lower levels (i.e. 75 to 90 ppm nitrogen) and switch to a mix with over 20% wood will most certainly see some nutrient deficiencies depending on the crops being grown. However, growers who customarily fertigate at higher rates (i.e. 150 ppm) will likely see no change in their crops. In short, the particle size of the wood materials and the percentage incorporated will dictate the rate and extent of nutrient tie-up. The

Traditionally, perlite (top center) has been the main component amended with peat to create substrates, but wood products are now commonly used in mix creation.

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economics of wood components often outweigh the cost of extra fertilizer if/ when needed.

2) Are wood substrates toxic to plants? If wood products have not been aged, treated, or processed in machinery that allows chemicals in fresh/green wood to be removed (solubilized or volatilized), then there can be issues with seed germination and/or severe plant stunting. The majority of reported issues have been with freshly produced, hammer-milled pine wood substrates. Commercial products on the market today have not had these problems widely reported.

3) Are there changes to substrate pH?

Wood has an inherently high pH compared to peat moss or pine bark. When you replace a fraction of those materials with wood, you increase the percentage of a higher pH material while decreasing the percentage of a lower pH material. Coupled with the lower pH buffering capacity of wood, this can quickly shift the pH upwards. Growers using less than 40% wood in their substrates should not notice a drastic change in pH, however, it should be monitored regularly. Lime amendment rates could be lowered as the percentage of wood increases.

4) Will wood substrates decompose in the pot and affect my crop? There is little evidence to suggest that wood substrates will degrade during the production time of most any crop. However, this depends on the wood type and species. If growers are making/using their own wood materials that contain hardwood or sawdust, there can be negative issues with substrate decomposition, discolouring, and shrinkage. Commercial products on the market today are made from pine, fir, or spruce, which are species known to be highly resistant to decay.

5) Should plants grown in substrates containing wood products be irrigated in the same way? For some growers, one of the biggest learning curves has been in adjusting irrigation practices for mixes with more than 20% wood product. Properties of the mix will affect how water is held, moved and released, and this will change with the percentage and type of wood fiber being incorporated. The grade of peat has an impact as well. As a result, some growers say their mixes hold more water, while others say less. It should not be assumed that mixes containing wood will behave like peat-lite mixes. The most notable difference may be the increased surface drying that oc-

curs in wood mixes. This can cause some growers to irrigate when, in reality, there is still plenty of water left in the pot.

6) Can wood substrates be used with existing pot-filling equipment and protocols? Most reported challenges have involved substrates containing more than 20% disc-refined wood fibers. The higher the incorporation rate into peat, the “fluffier” the substrate becomes. This can create challenges for growers using certain flat/pot-filling machines, especially as the container size gets smaller. Growers and substrate suppliers have found several solutions: adjusting the moisture of the mix before potting, over-filling the pots, vibrating tables/conveyers to settle the mix, or using other practical methods to ensure adequate fill. Wood fiber properties and container sizes are the two biggest variables that can influence pot filling.

7) Do PGR’s work the same way on crops grown in wood substrates? Several research trials have shown no significant changes in plant growth response to PGR drenches when grown in substrates amended with up to 50% wood. Of course, this may not be true for all PGR products and formulations or for all wood products, especially when used at higher incorporation rates above 50%. Growers have generally been successful with numerous crops treated with PGRs while using substrates with wood products.

8) If I blend wood with peat moss, will the volume of the final mix be the same? It depends, but likely not. When two or more substrate components (raw materials) are blended together, the end volume will often be lower than expected. It depends on the density of the materials, as well as the particle size, shape, and inherent characteristics. Depending on

the type of wood product being blended, as well as the method of blending, the final product/mix yield will decrease. In other words, 1 + 1 will likely yield 1.6 to 1.9 and not 2.0. Wood materials made with hammer mills are the easiest to blend, while disc-refined products are the most difficult. Buying premixed products avoids this issue.

9) Are there any consistency issues with commercial wood substrates? Few if any. Different manufacturing methods used to create different wood products offer varying product sizes, shapes, and qualities. At present, the most consistent wood materials are disc-refined or extruded. Though materials made by hammer mills (pine tree substrates, for example) can be made with a high degree of precision and reproducibility, less is known about how to achieve the same consistency on a commercial scale. It is believed that with further research on hammer-mill processing of pine, these products can have the same consistency and reproducibility of other manufacturing methods. This could be important as hammer-milled wood materials are cheaper to produce compared to extruded and disc-refined methods.

10) Which is the best commercial wood substrate product on the market? Whichever one you choose. Of the commercial products available as 100% raw wood material or as pre-blended mixes, suppliers across North America have ensured that these products are uniform and ready for use. Having worked with nearly all, if not all, wood materials on the market today, I know there are differences in how the materials behave, but they can all be used successfully by tweaking production practices. Purchasing a product that fits your operation (existing machinery, pot size, irrigation system, etc.) from a reputable substrate supplier is a key decision to be made.

We may not yet fully understand all of the challenges and potentials of using wood substrate materials in our growing systems, but we know more now than we did at the start 15 years ago. Grower experiences coupled with independent research results will continue to answer these questions as well as others that arise in the future.

Brian E. Jackson, PhD, is an Associate Professor and Director of the Horticultural Substrates Laboratory at NC State University. Brian can be reached at Brian_Jackson@ncsu.edu.

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QUALITY HAS A LABEL

WEST COAST specialist looks back on career

B.C. ornamental and greenhouse specialist shares highlights of career

BY GRETA CHIU

After more than three decades of public service with the provincial government, David Woodske retired from his role of 22 years as the BC industry specialist for ornamentals and greenhouse vegetables.

“To get to go around and talk to growers one-on-one,” says Woodske just prior to retirement, “I will certainly miss that.” Another highlight was collaborating with ministry colleagues and industry partners to resolve the sectors’ challenges.

“Dave has been a go-to source for up-to-date information on any topic ‘greenhouse,’” says Gary Jones, a faculty member at Kwantlen Polytechnic University who had collaborated with Woodske for over 15 years. “He’s one of those folks who just quietly gets on with things in the background, while being reliable, honest and bringing great insight because of his wide net of industry connections.” In 2016, the BC Greenhouse Growers’ Association presented Woodske with the Meritorious Service Award for his contributions to the greenhouse vegetable industry.

Though he first began as the province’s nursery specialist in 1998, Woodske’s position grew to include floriculture and greenhouse vegetables as colleagues departed and roles were consolidated. It was a large and diverse portfolio of crops, but with Woodske’s well-rounded repertoire of skills and experiences – including research on microbial biocontrol for powdery mildew in cucumbers, managing a tissue culture lab for greenhouse nursery propagation, and running greenhouse vegetable production trials – few would have excelled at the job’s duties as he did.

Woodske estimates that he’s invited four to five hundred speakers to various events. “It’s rewarding, but it’s challenging because we don’t have [as many] researchers in BC to tap on the shoulders,” he says. Speakers are often from outside of the province and can be snowed in or have family emergencies leading to last-minute cancellations. For that, he’s very appreciative to those making it out in the middle of winter.

As the industry matured and information became increasingly accessible, Woodske observed a general decline in attendance at horticultural conferences. “Webinars alone are something that I’ve seen more and more [of], and they’re fantastic. The quality….is so much better than where it was 10 or 15 years ago, and I think that’s going to start putting even more pressure on these short course programs.” He expects there to be more consolidation across smaller tradeshows as larger ones continue to expand –similar to the sector.

“One of the first projects I [worked on] was sudden oak death in BC,” Woodske recalls. “It was a very difficult period because you saw the impact it was having on nurseries.” Large sections of nursery operations were destroyed after finding evidence of the disease. “It was harmful, especially in the beginning when there was no compensation.” Led by the BC Landscape and Nursery Association, Woodske worked in collaboration with the CFIA, the BC Ministry of Agriculture and other industry stakeholders to develop best management practices for reducing the introduction of the pathogen and its effects.

His passion for the industry showed. In addition to his extension duties, Woodske was particularly active in organizing provincial and regional conferences. Over the past two decades,

“The industry has changed a lot,” Woodske remarks. “The mid-90s were an interesting time because there was one marketing agency who [growers] sold all of their produce to – BC Hot House Foods,” says Woodske. “They won awards for some of their work …[which] did increase consumption of greenhouse vegetables and helped everyone in the greenhouse sector in North America.” Working with Jim Portree, who was BC’s greenhouse vegetable specialist at the time, Woodske describes how there was one study group for each greenhouse commodity, allowing producers to gather at a local greenhouse and discuss production issues. “It helped the whole sector,” he says, and the quality from BC Hot House Foods benefitted from these collaborations. Since then, multiple marketing agencies emerged over the years and information became less readily shared.

He also notes that margins are much smaller today than they were in the late 90’s/early 2000’s, particularly with foreign competition from countries like Mexico. “The industry is still doing well, but I think it’s a little tougher.” With greenhouses consolidating, but still expanding in acreage, Woodske takes it as a good sign.

Expecting his first grandchild at the time, Woodske had no immediate plans to consult. “At this point, my plan is family time, gardening and travel…I will miss colleagues and the interaction with industry but it’s time to move on,” he says. “My garden will look better than it’s looked before.”

ARE YOU MEASURING ELECTRICAL CONDUCTIVITY OR TOTAL DISSOLVED SOLIDS?

Nowadays, cultivators are under pressure to produce high-quality plants while minimizing production costs and maximizing yields and profits. This can be achieved by having total control over the aerial environment and the rhizosphere. To properly control both environments, it is necessary to closely monitor crops, assess the value and execute the proper actions to maintain the right environment for the plant to reach its maximum genetic potential. One important input for crop culture is the management of crop fertility. In this article, we will discuss the use of Electrical Conductivity (EC) to measure the ions in a solution.

ELECTRICAL CONDUCTIVITY (EC) VS. TOTAL DISSOLVED SOLIDS (TDS)

Growers should frequently monitor the mineral content in the water, nutrient solution and the growing medium before and during the crop cycle. An easy way to evaluate this value is to know the EC of the nutrient solution, however sometimes a grower may respond with “282 ppm” or “450 ppm”. Unfortunately, those values do not mean anything when we are trying to evaluate the mineral content in water, nutrient solution or growing medium. In a solution, the EC is the ability of the solution to transmit an electrical current, which is measured in units as μS/cm, mS/cm or dS/m. Total Dissolved Solids (TDS) is the weight of the solids that were in a solution after the water is evaporated; these units are measured in ppm or mg/l. Since the TDS is estimated by a gravimetric method, which is time consuming; this value can be obtained indirectly by measuring the EC of a solution. In the previous example, the cultivator’s answer is in TDS, however this is inaccurate because the value can vary depending on the sensor conversion factor into EC. The conversion factors for 1 dS/m to ppm are between 0.4 and 1; the most common conversion factors are 0.5 and 0.7. The main difference between both factors is the amount of salts contained in the solution, thus the sensor might have to be adjusted during the crop cycle because the salt content increases as the plant grows. In general, well water has low mineral content (low EC) while a nutrient solution, which has all essential elements, has a higher EC. In

contrast, distilled water or RO water will have an EC close to 0 dS/m, since all nutritive elements are removed. As a result, a concentrated nutrient solution will conduct more electricity, which means higher EC than a lowconcentration nutrient solution.

Source: Premier Tech

TESTING WATER EC AND PH TO AVOID PROBLEMS

Knowing the EC and pH of the water, nutrient solution, drainage and other characteristics of the growing medium are important to avoid plant development and growth problems. The water EC can be used to evaluate its quality. For example, high EC values usually means high content of K, Na and Cl. The EC of the nutrient solution helps us to see if the injection rate or the fertilizer concentration is at the desired level. In most fertilizer labels, it is common to find the relationship between the content of ppm of N and its corresponding EC for a specific injection rate. In one hand, if the water quality is good, high EC means high nutrient concentration. On the other hand, a little difference in water and nutrient solution EC means low nutrient concentration. Therefore, by knowing the nutrient solution’s EC, it is possible to estimate the concentration of essential elements. Another method is to measure the leachate or drainage EC to give us an idea of how much water the plant is using and if it is necessary to increase the percent drainage to avoid salt built up in the medium. Similarly, the medium EC and pH give us an idea of the salt content (including essential elements) in order to make a decision on watering frequency and if it is necessary to lower or increase the pH.

Fig 1: Example of an EC measurement with a handheld meter using SME (saturated medium extract) of in-use growing medium sampled from a crop after several weeks. EC is measured to determine the concentration of salts.

Fig 2: When measuring EC of in-use growing medium, select samples from multiple containers. Remove the upper ½ inch of growing medium and discard, since salts can concentrate at the surface and give inaccurate readings. Use core samples of media from container of same crop, and of same age, and blend together. For testing with the SME method (Saturated Medium Extract), add deionized or distilled water to blended sample and mix until surface of growing medium is glistening on surface, as shown in the picture above. Wait 1 hour, then take measurements with EC and pH meter placed into the ‘mud’. Always calibrate meter before use. Source: Premier Tech

WHAT IS THE ACTUAL NUTRIENT CONCENTRATION IN A NUTRIENT SOLUTION?

IS THE ACTUAL NUTRIENT CONCENTRATION IN A NUTRIENT SOLUTION?

Let’s do a quick calculation (Table 1). Based on recommendations, the cultivator needs to fertigate the crop with 20-10-20 peat lite fertilizer at a rate of 100 mg/l. The injector rate is set at 1:128 and in this case well water is used. The well water pH is 7.5 and the alkalinity (CaCO3) is 150 ppm. By using 20-10-20 peat lite, the medium pH will decrease over time if the cultivator is using this fertilizer as the only source of nutrients. This is because this fertilizer has an acidic reaction. These are the results:

Table 1. Concentration of the essential elements in the nutrient solution.

(mg/l or

The well water EC is 0.5 dS/m, the fertilizer adds 0.6 dS/m to the well water. Therefore, the EC of the nutrient solution will be 1.1 dS/m (Table 2). For this example, we will use three sensors with different conversion factors:

Table 2. EC and TDS measurements from three different sensors.

Based on this example, the use of EC is the same for all sensors. However, the TDS is different for each sensor depending on the conversion factor each sensor uses. If the cultivator is measuring TDS and he asks for an advice to see if the fertilizer application rate is enough, the answer could be one of the three values 550 ppm, 704 ppm or 770 ppm. However, if the cultivator says 1.1 dS/m, the technical advisor can relate the nutrient solution’s EC with the EC that the fertilizers adds to the well water.

Measuring the EC and pH of a solution is a straight forward reading since the sensor is placed directly into the solution and it reads both values. To measure the EC and pH of the growing medium, the sample needs to be processed by using one of the three methods: Saturated Medium Extract (SME), 1:2 method or pour-though. To compare the EC readings of growing medium, it is necessary to know the methodology used, since each of these three methods have different values for the ideal ranges. For example, a value that is classified as heavy range for SME is classified as medium range for the Pour-Thru Method.

In conclusion, it is strongly recommended to use EC measurement since it is a universal method, compared to TDS which can vary for several reasons. TDS is helpful to give us an idea of the total ion concentration in a solution, but it does not give us the concentration of a particular element. Also, TDS is a calculated measurement based on the EC of the solution, the conversion factor of equipment used and the ion concentration of the solution. EC values give us a universal reading which makes it easy to compare results to known standards and to compare to laboratory methods.

Jose Chen Lopez, Ph.D.

Jose Chen Lopez, Ph.D. Horticulture Specialist – South Western US and Mexico

Horticulture Specialist – South Western US and Mexico

Signs your greenhouse cucumbers need calcium

Sixteen elements are considered “essential” nutrients for proper growth of plants. We know enough about how to deliver them and in what quantities and ratios at different stages of growth. But in spite of this, we still encounter deficiencies sometimes. There is one particular deficiency that I have seen in some fall crops. Pictured here is a cucumber crop planted in early October and expected to go through winter under supplemental lights.

What’s also shown is a typical case of calcium deficiency in cucumbers. Here are some key pointers for diagnosis:

ABOVE

These cucumber plants are showing signs of calcium deficiency. Can you recognize them?

• It appears in younger leaves and shoots, which are the actively growing points of the plant.

• Leaves always cup downwards, show severe puckering and edges look “scorched.”

• Cucumber flowers are weak and the fruit aborts quickly.

• One can sometimes see white spots scattered on the leaf’s surface.

• Calcium deficiency can also appear in actively growing root tips and appear brown in colour.

ABOUT CALCIUM

Calcium is a macronutrient and typically needed in larger amounts. Once absorbed through the roots, it is moved to actively growing cells and fixed in the cell walls as calcium pectate. This gives strength to cell walls and holds them together, but it also means calcium is immobile. When deficiency occurs, symptoms are first seen in newer, younger growth.

Because calcium is a cation with two positive

charges (Ca2+), plants work harder to absorb it compared to potassium (K+) or sodium (Na+) which have a single positive charge. This fact has important practical implications as calcium absorption strongly depends on the movement of water from roots to leaves through transpiration. Once a calcium deficiency has been diagnosed, consider potential reasons so that corrective action can be taken quickly:

• First check that enough calcium is being fed to the cucumber plants. A range between 150 to 200 ppm is considered adequate.

• See if there are any pH issues. If the pH goes above 6.4, then calcium can interact with phosphate and sulfate, thus precipitating out and not be available to the plant. This can happen in the irrigation lines and one may see white deposits at the ends of the drippers.

• During fall weather, one big factor could be the climate. Since venting is reduced, relative humidity can build up easily. With relative humidity above 80%, transpiration can be reduced. This, in turn, reduces the flow of water moving from the roots to the tops of the plants, reducing calcium supplied to the growing points.

• If your computer is able to do so, calculate vapour pressure deficit or moisture deficit (VPD or MD). A VPD of less than or equal to 1 g/m3of air will reduce transpiration and thus calcium supply. This can happen on cloudy days and during low venting conditions. In this case, the corrective measure would be to create what is called an “active” climate by reducing the relative humidity, promoting more aggressive air circulation and avoiding condensation on leaves and fruit.

• Under high VPD conditions in the summer when the temperature is high and relative humidity is low, plant transpiration rate increases but at the same time, the plant also reduces the absorption of nutrients and takes up water only. Plants have the ability to do that. Under such conditions, calcium deficiency can also occur. To summarize, it is especially important during this time of year to maintain an active climate. Keep VPD in the desirable range between 3 and 7 g/m3 of air or between 3.9 and 9.3 mbar.

Mohyuddin Mirza, PhD, is an industry consultant in Alberta.

PHOTO CREDIT:

M. MIRZA

GREENHOUSE vegetable specialist retires headset

After 28 years as Ontario’s greenhouse vegetable specialist, Shalin Khosla retired from his post at the end of last year.

sector has grown in nearly three decades. “When I started [with OMAFRA], there were 300 acres in Ontario,” he says. “Now we’re at 3,000.”

From 300 acres to 3,000 acres, Shalin Khosla’s work has been instrumental in the expansion of Ontario’s greenhouse industry .

BY GRETA CHIU

A known extension expert and researcher with the Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA), Khosla’s work on production systems, energy and nutrient management, as well as climate control for greenhouse vegetable crops was instrumental in advancing the greenhouse sector. His years of dedication were honoured and recognized at the Ontario Greenhouse Vegetable Growers’ (OGVG) annual general meeting last year.

Speaking with Khosla reveals just how much the greenhouse vegetable

ABOVE

An alumnus of the University of Guelph, Khosla got his first taste of greenhouse growing in Leamington, Ont. during his time as a graduate student. Conducting his research on tomatoes, he tested several different greenhouse technologies and techniques that were still in their infancy. Glass or acrylic or double plastic, light or no light, rockwool and NFT – all research that the sector continues to build upon today.

After graduating from his Masters, Khosla accepted a five-year federal research position in Harrow where

Holly Dolan, manager of the Greenhouse, Agroforestry and Specialty Crops unit at OMAFRA presented Khosla with a certificate signed by the Premier of Ontario, in recognition of his retirement and outstanding career.

ABOVE

OMAFRA specialists Chevonne Dayboll and Cara McCreary present Khosla with a thoughtful parting gift.

he says they “worked on everything in greenhouses.”

“We were working on lighting, energy – all the things we work on now, we did at that time,” he says. It was also a key period of transition where they supported growers in their switch from soil to rockwool and soilless production systems.

After a brief period in the private sector, he returned to public service in his current role at OMAFRA, based out of the Harrow Research and Development Centre (HRDC) with Agri-

culture and Agri-Food Canada (AAFC).

Khosla says his favourite parts of the job included working with new innovative technologies and having new ideas to work with and new problems to work on. Humbly crediting his work to the help and cooperation he’s received in the sector, he stresses the importance of collaboration. “It only works because we’ve had good people to work with – OMAFRA, AAFC, growers, OGVG, and all the suppliers and companies involved.” Without their support, it would have been really tough, he says.

GROWERS GATHER TO CELEBRATE

Khosla’s expertise made him a natural link between researchers and growers. Hosted by OMAFRA, his retirement celebration drew over 136 people to the Roma Club in Leamington, Ont. back in January of this year.

“Shalin made a huge contribution to the area, to the greenhouse industry,” said Tom Papadopoulos, a now retired AAFC research scientist at HRDC. “The fact that this retirement party is mostly growers speaks volumes.”

Currently residing in LaSalle, Khosla looks forward to some time off, continuing his hobbies in gardening and woodworking, as well as his active involvement in the local community.

“Your openness to allowing me onto your farms, to teaching me what you were doing and allowing me to help you move forward – that was the best part of my job,” he said to growers at the luncheon. Having worked with three generations of growers, he added, “I figure it’s time to leave before I start with the fourth.”

Visit greenhousecanada.com for a recap of the day.

GROWING CONTAINERS

MORE FOR LESS: Lowering N, P and K in mums

Reduced nitrogen, phosphorus and potassium inputs lead to quality chrysanthemums.

BY DR. BARRY J. SHELP, EDWARD J. FLAHERTY, WILLIAM J. SUTTON, SKYE DUNCAN STEPHENS, ALYNA

J. DONETZ, LOU M. SCHENCK AND JAMIE AALBERS

Closed subirrigation systems are popular in indoor floricultural production because they reduce nutrient usage and the risks of contaminating water resources with nitrogen (N), phosphorus (P), boron and molybdenum. However, the recirculated nutrient solution must be refreshed occasionally and eventually discharged or treated in accordance with applicable environmental legislation. Consequently, it is likely better to reduce nutrient delivery where possible so that even less fertilizer is used.

Based on supplier recommendations, general fertilizer practices for cultivating greenhouse pot chrysanthemums typically involve a complete soluble N/P/K fertilizer such as 20-10-20 at 300-400 ppm N with micronutrient amendments. For subirrigation in particular, research and industry recommend a lower fertilization rate that is often 25-50% less and reduced or eliminated during the final two to three weeks of the crop. Guidelines are not typically given for the other macronutrients (i.e., sulphur, calcium and magnesium), probably because they are often supplied in excess, as counter ions in the fertilizer formulation or in the limestone or dolomite used for pH adjustment of the pot medium.

Over the past decade, we investigated a nutrient delivery strategy that improves the macronutrient use efficiency of subirrigated pot chrysanthemums grown under research greenhouse conditions, without adversely affecting crop production or quality. Entire macronutrient and micronutrient supplies were removed during the reproductive growth stage, and 50% of the macronutrient levels in Sonneveld’s solution (in ppm: 260 N/80 P/235 K) were provided during the vegetative growth stage, together with the essential micronutrients. There were no visible signs of macronutrient deficiency, and plant/flower yields and quality were unaffected.

pushed the envelope even further, using approximately 75% less N/P/K than the industry standards up until bud break. These findings advance the development of our modified, low-input delivery strategy and validate the use of even lower macronutrient levels in producing subirrigated pot chrysanthemums.

EXPERIMENTAL SET-UP

In the commercial experiments, different N/P/K rates and delivery regimens were tested on pinched plants of three to four chrysanthemum cultivars at Schenck Farms and Greenhouses in St. Catharines, Ont. Experiments were conducted over two separate summers (denoted Schenck #1 and Schenck #2), using different N/P/K rates each time. Plants were individually grown in a peat moss:perlite mix (90:10 by volume, pH 6.0) using an automated open subirrigation system housed in a naturally lit greenhouse.

ABOVE

Figure 1. Chrysanthemums were tested using three N/P/K delivery regimens. This photo shows 75V plants (75/22/75 up to bud break, followed by potable water for the remainder of the crop cycle).

Subsequent commercial and research trials detailed here

Three delivery regimens (N/P/K in ppm) were used in each experiment (delivered during V=vegetative stage and/or R=reproductive stage), depending on the year:

1. 150VR = 150/59/322 or 100VR = 100/29/100 over the entire crop cycle (“control”);

2. 150V = 150/59/322 or 100V = 100/29/100 up to bud break, followed by potable water during the remainder of the crop cycle; and,

3. 75V = 75/30/161 or 75V = 75/22/75 up to bud break, followed by potable water during the reminder of the crop cycle.

The three delivery regimens were randomly assigned among three adjacent flood benches. Plants of all cultivars were arranged randomly at both ends of each bench.

To obtain a more rigorous assessment of the low-input delivery regimen, four separate research trials (UofG #1-4) assessed the growth of two pinched chrysanthemum cultivars

ABOVE As shown in Figure 2 (left, Schenck trial #1) and Figure 3 (right, Schenck trial #2), most chrysanthemum dry mass yields (of shoots) within cultivars did not differ significantly when grown in a commercial setting with three N/P/K delivery regimens. (Bars sharing the same letter within a cultivar are not significantly different.)

Fertilizer source/formulation (year) Macronutrient (ppm)

Fusion Plant Products 17-5-1728584285

Peters Professional 17-3-1730053300

Sonneveld’s solution (1987) 260 80235

Schenck #1 75 30 161

Schenck #2 752275

UofG #1-4 642090

ABOVE

Table 1. Macronutrient inputs in commercial (Schenck) and research (UofG) trials are relatively low, compared to historical and commercial fertilizer formulations.

with a single N/P/K rate (in ppm; 64/20/90), as well as ample macro and micronutrients delivered up to bud break only at the University of Guelph. The plants were grown in a peat:perlite mixture (50:50 by volume, pH 5.0-5.7) using an automated ebb-and-flow, closed subirrigation system housed in a naturally-lit research greenhouse.

VALIDATION OF LOW N/P/K INPUTS IN COMMERCIAL AND RESEARCH SETTINGS

The two commercial experiments (Schenck #1 and 2) supplied N/P/K levels as low as 25% of the levels found in historical and current fertilizers (see Table 1). There were no visible signs of nutrient deficiency in either experiment (Fig. 1).

Regardless of the experiment and cultivar, supplying the lowest fertilizer rate during the vegetative stage only did not significantly decrease dry mass yielded from the shoots of the plants. There was no difference when compared to the highest fertilizer rate, whether supplied over the vegetative stage only or over both vegetative and reproductive stages (Figs. 2 and 3).

Analysis of the diagnostic leaf revealed that all cultivars grown in Schenck #1, except ‘Kingsville Yellow’, exhibited clear decreasing trends in leaf N, P and K levels as the weeks progressed. The N, P and K levels at bud break ranged from 4.5 to 5.4%, 0.23 to 0.60%, and 3.3 to 5.6% of dry shoot mass respec-

ABOVE

Table 2. Leaf macronutrient levels at bud break in pot chrysanthemums grown with low macronutrient inputs under commercial (Schenck) and research (UofG) conditions are considered acceptable, compared to sufficiency levels from the extension literature.

tively, across all cultivars with the lowest delivery regimen. This shows that leaf macronutrient levels at bud break were considered sufficient, compared to recommended values found in the extension literature (Table 2).

In the four separate research trials conducted at U of G using the low-nutrient regimen, neither of the cultivars exhibited visible signs of nutrient deficiency, and the quality of the plant and flowers was excellent (Fig. 4). Across both cultivars and all trials, the leaf macronutrient levels at bud break aligned with values found in the extension literature (Table 2). These findings provide strong support for the use of relatively low N/P/K inputs up to bud break only in the production of chrysanthemum plants/flowers with high quality.

FROM VALIDATION TO APPLICATION

Many commercial fertilizer formulations are now available for cultivating greenhouse pot chrysanthemums (Table 1). Examples include Fusion Plant Products 17-5-17 (Plant Products, Ancaster, ON) and Peter’s Professional 17-3-17 (ICL Fertilizers, Dublin, OH), which contain all macronutrients but sulphur (Table 1). Sonneveld’s solution was developed in 1987 for flowers and vegetables; it contains N/P/K levels similar to those in the commercial fertilizers. Our previous nutrition studies on greenhouse-grown pot chrysanthemums, which used Sonneveld’s solution as the

industry standard, confirmed that the production of market-quality plants and flowers were unaffected by removing the entire nutrient solution at bud break, and by supplying N and P levels as low as 130 and 40 ppm, respectively, during vegetative growth.

In this article, a combination of commercial and research greenhouse experiments demonstrated that even the lowest levels of N/P/K supplied (in ppm: 64-75 N; 20-30 P; 90-161 K) led to acceptable nutrient levels in the leaves (Tables 1 and

2). Furthermore, plant and flower quality at harvest remained consistent across a wide range of N/P/K supplied, indicating that the plant is able to use these macronutrients more efficiently with decreasing macronutrient supply up to bud break. If the macronutrient supply was not reduced or removed after bud break, even more macronutrients would be wasted.

As this research shows, macronutrient delivery to modern chrysanthemum cultivars can be further optimized by reducing their levels in the subirrigation solution

Winning mixes!

heavy

natural

Figure 4. UofG plants

by approximately 75% during vegetative growth. Our modified delivery practice provides chrysanthemum growers, fertilizer manufacturers, farm consultants and government advisors with the tools to reduce macronutrient usage, the volume of concentrated nutrient-rich solutions for management, and environmental contamination. Future research will focus on the use of essential micronutrients, especially boron and molybdenum.

Acknowledgements: This project is part of the Accelerating Green Plant Innovation for Environmental and Economic Benefit Cluster and is funded by the Canadian Ornamental Horticulture Alliance (COHA-ACHO) and by the Government of Canada under the Canadian Agricultural Partnership’s AgriScience Program. Industry partners include AgMedica Bioscience Ltd. of Chatham, Ontario, and Schenck Farms and Greenhouses of St. Catharines, Ontario. Thanks to Berger of Sainte-Modeste, Quebec, for supplying the uncharged pot mixture.

For more background, see the articles “Moving towards low-input floricultural operations”, and “It’s about time: Using phosphorus efficiently”, which are published, respectively, in the December 2018 and March 2020 issues of Greenhouse Canada.

Barry Shelp is Professor Emeritus, Edward Flaherty and William Sutton are technicians, and Skye Duncan Stephens and Alyna Donetz are graduate students in the Department of Plant Agriculture at the University of Guelph. Lou Schenck is the owner and operator of, and Jamie Aalbers is the trial manager at, Schenck Farms and Greenhouses. For more information, please contact Dr. Shelp at 518-824-4120 ext. 53089, or bshelp@uoguelph.ca.

2021 BUYERS GUIDE

Your products & services guide for the greenhouse industry.

2021 BUYERS GUIDE & DIRECTORY

A & L CANADA LABORATORIES INC.

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A.M.A. HORTICULTURE INC.

2011 Spinks Dr. Kingsville ON N9Y 2E5

Tel: 519-322-1397

Toll free: 800-338-1136

Fax: 519-322-1358

e-mail: ama@amahort.com

Website: www.amahort.com

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ACCU-LABEL INC.

439 Silver Creek Industrial Dr. Lakeshore, ON. N8N 4W2

Tel: 519-727-0888

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Email: sales@accu-label.com

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A-ROO COMPANY LLC

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Tel: 440-238-8850

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AG ENERGY CO-OPERATIVE LTD.

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Tel: 519-763-3026

Toll free: 866-818-8828

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e-mail: sales@agenergy.coop

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ACTI-SOL

22 Brinloor Blvd

Toronto ON M1M 1L2

Tel: 416-913-0060

e-mail: info@acti-sol.ca

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Description: Acti-Sol manufacture and distributes natural fertilizers certified for organic agriculture. We offer layer hen manure fertilizers as well marine fertilizers (liquid seaweed, kelp, hydrolysed fish).

AGROLUX, A HAWTHORNE GARDENING COMPANY

28 Main St. W Kingsville, ON N9Y 1H1

Tel: 519-792-0191

Email: denis.dullemans@agrolux.com

Website: www.agrolux.com

Description: Agrolux consults and offers lighting solutions for HPS and LED installations. We are a worldwide supplier of assimilation lighting for horticulture. We distinguish ourselves based on advice, service and quality. We produce our own luminaires and export them to clients worldwide. Our broad knowledge, extensive experience and our smart and innovative technological solutions, makes us stand out in the horticulture branche. We will happily provide you with good, honest advice that fits perfectly for your company and possibilities. But you can also count on us for fast delivery of lighting luminaires or parts.

AGROZONE INTERNATIONAL INC.

589 Charlotteville Rd. 8

Simcoe ON N3Y 4K5

Tel: 519-582-4215

e-mail: johno@agrozoneint.com

Website: www.agrozoneint.com

Description: Ozone technologies company specializing in the cleaning of water supplies, both supply and return waterflows from greenhouses. Air purification for storages and packing facilities including Vegetables, Flowers and Cannabis facilities.

ANDERMATT CANADA

1350 Regent St.

Fredericton NB E3C 2G6

Tel: 506-444-5690

e-mail: info@andermattcanada.ca

Website: www.andermattcanada.ca

Description: Manufacturer, Distributor of Biological Solutions for insects, disease and plant health. Member of Andermatt Global Group of companies. Specializing in Bio Insecticides that are safe on beneficials while targeting key pests.

ARGUS CONTROL SYSTEMS LTD.

18445 53 Ave.

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e-mail: sales@arguscontrols.com

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Twitter: @arguscontrols

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ARMTEC

33 Centennial Rd.

Orangeville ON L9W 1R1

Tel: 519-942-2643

Toll free: 800-354-9146

e-mail: info@armtec.com

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ASB GREENWORLD LTD.

332911 Plank Line Rd.

Mount Elgin ON N0J 1N0

Tel: 519-688-3413

Fax: 519-842-8091

e-mail: karenk@asbgreenworld.com

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Description: ASB Greenworld supplies various professional greenhouse grower mixes, seedling and plug mixes, indoor/outdoor retail grower mixes, peat moss, soil conditioners, turf top dressing, retail potting soils and mulches.

BEDDINGSUPERSTORE.COM - BUNK HOUSE

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e-mail: tony@beddingsuperstore.com

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BELCHIM CROP PROTECTION CANADA

BAILEY NURSERIES

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BALL FLORAPLANT

622 Town Rd.

West Chicago IL 60185-2698

Tel: 800-879-2244

Fax: 800-234-0370

e-mail: ltoering@ballhort.com

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Description: Ball FloraPlant is a leading brand of vegetatively propagated plant varieties that has won critical acclaim for its ability to produce clean, healthy cuttings. It is distributed through Ball Seed.

104 Cooper Dr. Unit 3

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e-mail: jouke.sypkes@belchim.com

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Description: Crop protection products for greenhouse growers across Canada including Insect Control (FujiMite, Talus, Citation, Tristar), Fungicides (Phostrol, Torrent, Cueva) and BioFungicides (Timorex Gold, Diplomat).

BELLPARK HORTICULTURE

120-19288 22nd Ave

Surrey BC V3Z 3S6

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BALL SEED/BALL SUPERIOR-CANADA

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Our sales and project consultants realize that each grower is different and that each project requires a personal level of attention to detail to ensure it’s success.

Our service team is committed to offering our customers the highest level of service with the quickest response times when required. With dedicated parts and service departments, our factory-trained technicians are available when you need them to service everything that we sell.

Bellpark Horticulture is the North American dealer for Visser, Mayer, Logitec Plus, DryGair, Unifortes & AutoStix

BELLWYCK / HORTICOLOR

1025 8th St. E.

Owen Sound ON N4K 1M5

Tel: 866-258-2992

Fax: 519-376-8726

e-mail: info@horticolor.net

Website: www.horticolor.net

Facebook: facebook.com/Bellwyckhorticolor-323814344374639

Description: TAGS/LABELS, PRINTING, PACKAGING & MARKETING

BELLWYCK horticolor with over 100 years of manufacturing history is committed to a culture of Innovation, Quality and Excellence that will assist in the success of your organization and products. As a vertically integrated privately owned corporation with manufacturing locations in Langley (BC), Toronto and Owen Sound (ONT) and our Horticultural marketing in Boucherville (QC) we are SMALL enough to care and LARGE enough to scale!

A Canadian Manufacturing organization with a multitude of diverse workflows we are an Essential Service supplier with secure supply chains in place! Products for discussion could be VERSA tags, custom tags, packaging, posters, banners, leaflets, brochures, and catalogs. In addition, we also provide specialized horticultural and photographic data bases, brand creation/ implementation and logo development with virtual platforms.

BEN BERG FARM & INDUSTRIAL EQUIPMENT LTD.

42134 Hwy. 3

Wainfleet ON L0S 1V0

Tel: 905-899-3405

Toll free: 800-387-4713

Fax: 905-899-3507

e-mail: info@benberg.com

Website: www.benberg.com

Facebook: facebook.com/ BenBergFarmEquipment

Description: Compact & portable bale breakers, soil mixers, flat fillers, and conveyors. Custom design & fabrication of equipment. Tractors, implements, construction equipment, utility vehicles, and trailers.

BERGER PEAT MOSS LTD.

121 1er rang

St-Modeste QC G0L 3W0

Tel: 418-862-4462

Toll free: 800-463-5582

Fax: 418-867-3929

e-mail: customerservice@berger.ca

Website: www.berger.ca

Twitter: twitter.com/berger_ca

Facebook: facebook.com/berger.ca

Description: Mastering the Craft of Growing Media

Berger is a worldwide leader in the production of high-quality growing media for over 55 years. Our reputation for quality and consistency is our trademark.

BIOSAFE SYSTEMS

22 Meadow Street

East Hartford CT 06108

Tel: 860-290-8890

e-mail: info@biosafesystems.com

Website: www.biosafesystems.com

Twitter: twitter.com/BioSafe_Systems

Facebook: facebook.com/BioSafeSystems

Description: The makers of ZeroTol® and SaniDate® Sustainable and effective crop protection, water treatment, and sanitation solutions for agribusiness. Find us on Instagram @biosafe_systems

BIOWORKS

100 Rawson Rd., Ste. 205

Victor NY 14564

Tel: 800-877-9443

Toll free: 800-877-9443

Fax: 585-924-4412

e-mail: cashbee@bioworksinc.com

Website: www.bioworksinc.com

Twitter: twitter.com/BioWorksInc

Facebook: facebook.com/BioWorksInc

Description: We advise and supply commercial flower and produce growers looking for sustainable plant health solutions.

BOTANICARE

3204 NW 38th Circle

Vancouver WA 98660

Tel: 888-478-6544

e-mail: info@hawthornegc.com

Website: www.botanicare.com

Twitter: twitter.com/Botanicare

Facebook: facebook.com/botanicare

Description: As plant cultivation experts, Botanicare is dedicated to providing superior products, expert advice and support to help growers produce better crops. What started as an experimental plant nutrient, Pure Blend (now Pure Blend Tea), brewed in the back room of an Arizona retail gardening store has evolved into Botanicare, a market leader in hydroponic products. After 20 years of innovation, foresight and unconventional thought we have seen the industry and our company blossom. We are committed to finding new ways to encourage growers to do what they do best-grow.

BOULDIN & LAWSON

70 Easy St.

McMinnville TN 37110

Tel: 931-668-4090

Toll free: 800-443-6398

Fax: 931-448-3209

e-mail: sales@bouldinlawson.com

Website: www.bouldinlawson.com

Description: Bouldin & Lawson a proven name in the Greenhouse and Nursery industry.

With over 50 years of experience providing nurseries and greenhouses with quality automated equipment to improve productivity and efficiency

CANADIAN GREENHOUSE CONFERENCE

PO Box 11

Jordan Sation ON L0R 1S0

Tel: 905-892-9851

Fax: 905-892-9851

e-mail: info@canadiangreenhouseconference. com

Website: www.canadiangreenhouseconference. com

Twitter: @CdnGreenhseConf

Facebook: facebook.com/CanadianGreenhouse-Conference-386277761433757

Description: Canada’s premier education, exhibition and networking event for all crops grown in a controlled environment.

CANARM LTD.

2157 Parkedale Ave.

Brockville ON K6V 5V6

Tel: 613-342-5424

Toll free: 800-267-4427

Fax: 800-263-4598

e-mail: hvacsales@canarm.ca

Website: www.canarm.com

Twitter: twitter.com/CanarmHVAC

Facebook: facebook.com/CanarmAgSystems

Description: Circulating fans, exhaust fans, duct work fans, dampers, inline variable speed duct fans, ERVs/HRVs, blowers, grow lights, general lighting, carbon filters, controls

CEEGREEN

5 Appleford Rd.

St. Catharines ON L2P 3M1

Tel: 289-407-6420

e-mail: pete@ceegreen.ca

Website: www.ceegreen.ca

Description: Ceegreen is your guide to better greenhouse operations. We connect you to the technologies you need. Options in the areas of lighting, energy, automation, irrigation, disinfection and insulated panel construction.

CEYHINZ LINK, INC

2900 Story Rd W

Irving TX 75038

Tel: 214-492-0803

e-mail: info@riococo.com

Website: http://www.riococo.com

Facebook: facebook.com/Riococo.Ceyhinz

Description: RIOCOCO has been supplying coco coir growing media to large scale commercial produce growers around the world since 2004. At RIOCOCO we own the process of manufacturing our coir from harvest all the way through the production of our growing media. We harvest and supply only young, inner island, freshwater raised coir. This means our coir is fresher, lower in EC to start, and then can be washed in various ways to meet your requirements. We do not use any chemicals in our process to supply you with truly organic Coco Coir from our ISO-certified facilities in Sri Lanka that many of the largest commercial growers around the world use and trust.

CLIMATE CONTROL SYSTEMS

408 Mersea Rd 3

Leamington ON N8H 3V5

Tel: 519-322-2515

e-mail: contact@climatecontrol.com

Website: www.climatecontrol.com

Description: Climate Control Systems Inc. has been manufacturing greenhouse automation systems since 1985. We carry 3 flagship products all designed to help growers maximize crop yields and help with water conservation and energy savings for commercial greenhouse operations worldwide, the Fertigation Manager, Climate Manager and Ozone Pro. With major leaps forward in water purification, recycling and reducing energy consumption, Climate Control Systems Inc. is sought after internationally for greenhouse automation technology. We have dedicated ourselves to produce innovative technology that will not only save growers time and money but also conserve the environments that surrounds them here and throughout the world.

We are proud to achieve these milestones as we see the need for environmental controls increase in the future. Our systems have been installed in Canada, US, Mexico and abroad

CLIMATROL SOLUTIONS LTD.

#307-17665 66A Ave

Surrey BC V3S 2A7

Tel: 604-576-7677

Toll free: 877-576-7677

e-mail: pam@climatrolsolutions.com

Website: www.climatrolsolutions.com

Description: Greenhouse equipment manufacturer and supplier

COLASANTI FARMS

1550 Road 3 East

Kingsville ON N9Y 2E5

Tel: 519-326-3287

Fax: 519-322-2302

e-mail: wholesale@colasanti.com

Website: www.colasanti.com

Twitter: twitter@colaanti_farms

Facebook: facebook@colasantistropicalgardens

Description: Certified under GC and JB Program. Potted Plants: specializing in unique premium tropical including Coffee, Figs, Olive, Citrus Trees, Banana, Aralia, HB Clean Air Collection, Perennial Cactus, Hen & Chicks, Sanseveria (Boncel Starfish, Mikado Fernwood, Samurai, Tough Lady, BOB, Silver Nymph, Cylindrica Braid, Tom Gracillis, Dragon Wing, Dragon Finger), Staghorn Fern,. Carnivorous Plants: Venus fly Traps and Pitcher Plants.

DARWIN PERENNIALS

622 Town Rd.

West Chicago IL 60185

Tel: 888-800-0026

Fax: 800-234-0370

e-mail: info@darwinperennials.com

Website: www.darwinperennials.com

Description: Darwin Perennials is a breeder/producer of high quality, vegetatively-propagated perennials sold through multiple distributors in North America. Plants are trialed and approved extensively for successful grower and garden performance.

DECLOET GREENHOUSE MFG. LTD.

1805 Charlotteville West Quarter Line

Simcoe ON N3Y 4J9

Tel: 519-582-3081

Toll free: 888-786-4769

Fax: 519-582-0851

e-mail: info@decloetgreenhouse.com

Website: www.decloetgreenhouse.com

Facebook: facebook.com/DeCloetgreenhouse

Description: PRODUCT / SERVICE: Design and fabricate various types of high-quality greenhouses as well as replacement poly, shade systems, benches, flood tables as well as a large inventory of replacement components.

DOOL INTERNATIONAL B.V.

Aartsdijkweg 55

Maasdijk - 2676 LE

Tel: 117-451-3094

e-mail: info@tcvddool.nl

Website: www.tcvddool.nl

Description: Dool International is a worldwide supplier and builder of greenhouses.

CRAVO EQUIPMENT LTD.

30 White Swan Rd.

Brantford ON N3T 5L4

Tel: 519-759-8225

Toll free: 888-738-7228

Fax: 519-752-0082

e-mail: sales@cravo.com

Website: www.cravo.com

Twitter: @CravoHouses

Facebook: facebook.com/cravoanz

Description: World Leader in Retractable Roof: greenhouses, shadehouses, tunnels, orchard & field covers.

Cravo’s automated Retractable Roof Production Systems (RRPS™) improve profitability for Fruits, Vegetables, Ornamentals, Floriculture and Pharmaceutical crops.

CROP DEFENDERS LTD.

5125 north talbot road

Maidstone ON N0R 1K0

Tel: 519-326-4545

Toll free: 866-300-2929

Fax: 519-326-4549

e-mail: info@cropdefenders.com

Website: www.cropdefenders.com

Description: We are a Canadian company with subsidiaries in USA and Mexico providing IPM services primarily to greenhouses; using locally-produced and imported beneficial-insects, nematodes, bumblebees, beneficial fungi, bio-stimulants, botanicals, microbial supplements and pest-monitoring tools.

We provide customized solutions through an integrated R&D lab run by renowned scientists in entomology and insect-pathology

We are located in Maasdijk, the Netherlands, in the middle of the Westland area.

Dool International designs, produces and builds entirely new greenhouses.

We are also the go-to specialist for renovating and lifting greenhouses.

Dool International specialises in realising projects of 1 up to approximately 5 hectares, anywhere in the world, for both vegetable production and horticulture.

DOSATRON/DILUTION SOLUTIONS

2090 Sunnydale Blvd.

Clearwater FL 33765

Tel: 727-443-5404

Toll free: 800-523-5404

Fax: 727-447-0591

e-mail: mailbox@dosatronusa.com

Website: www.dosatronusa.com

Twitter: twitter.com/Dosatronusa

Facebook: facebook.com/DosatronInternational

Description: We are excited to offer products and accessories that are designed to enhance your chemical delivery systems. We have Dosatron water-powered chemical injectors, Etatron electric metering pumps, and accessories!

DUTCH LIGHTING INNOVATIONS

De Vlonder 217A

Boekel - 5427 DG

Tel: 289-407-6420

e-mail: info@dutchlightinginnovations.com

Website: dutchlightinginnovations.com

Description: DLI is a collective of great minds with decades of experience in the commercial horticultural industries. Our engineers have developed a highly efficient range of horticultural lighting products.

ELECTROMECANIQUE

4033 Victoria Ave.

Vineland ON L0R 2C0

Tel: 905-562-7440

Fax: 905-562-4005

e-mail: emq@bellnet.ca

Website: www.ElectroMecaniQue1.ca

Description: Repair and sales of electric motors, pumps, fans, gear boxes, controls, AC inverters, air purification and related products. Sprecher & Schuh & Lovato industrial motor controls. Celebrating over 40 years of sales and service.

ENERTEC ENGINEERING

4811 King St.

Beamsville ON L0R 1B6

Tel: 905-563-5090

Fax: 905-563-7764

e-mail: alex@enertecengineering.com

Website: www.enertecengineering.com

Description: Enertec Engineering supplies heating systems, retrofits, system design & engineering services, project consulting and replacement parts. Our key focus is on energy efficiency and optimized performance.

ENERTEC MECHANICAL

4811 King Street

Beamsville ON L0R 1B6

Tel: 905-563-5090

Fax: 905-563-7764

e-mail: alex@enertecengineering.com

Website: www.enertecengineering.com

Description: Enertec Mechanical offers quality service, repair and installation for all your Heating, Air Conditioning, Refrigeration and Indoor Air Quality needs. Your Commercial HVAC Material and Service provider for Wineries, Greenhouses and Restaurants.

EVERGRO DIVISION, NUTRIEN SOLUTIONS

7430 Hopcott Rd.

Delta BC V4G 1B6

Tel: 604-940-0290

Toll free: 800-663-2552

Fax: 604-940-0258

e-mail: evergro@nutrien.com

Website: www.NutrienAgSolutions.ca/specialty

Description: Supplier of full range of greenhouse and nursery fertilizers, POLYON, Sustane, organics, pest controls, IPM biologicals, PRO-MIX growing media, containers, ground covers, Poly Film, growing supplies and testing services.

EXACON INC.

254 Thames Rd. E.

Exeter ON N0M 1S3

Tel: 519-235-1431

Toll free: 866-335-1431

Fax: 519-235-2852

e-mail: sales@exacon.ca

Website: www.exaconinc.ca

Facebook: facebook.com/exaconinc

Description: Manufacturer and Distributor of ventilation equipment including exhaust fans, horizontal airflow fans (including GreenHouse and V-Flo Fans), environmental controls, evaporative cooling, misting fans and heating for agricultural, commercial and horticultural applications.

FLOWERS CANADA GROWERS INC.

45 Speedvale Ave. E., Unit 7

Guelph ON N1H 1J2

Tel: 519-836-5495

Toll free: 800-698-0113

e-mail: flowers@fco.ca

Website: www.flowerscanadagrowers.com

Description: The Canadian trade association to promote the strength and unity of the floriculture industry through government representation, communication, marketing, education, research, plant health, trade, pest management and member services.

GAVITA

3204 NW 38th Circle

Vancouver WA 98660

Tel: 888-478-6544

e-mail: info@hawthornegc.com

Website: gavita.com

Twitter: twitter.com/GavitaInt

Facebook: facebook.com/Gavitainternational

Description: Gavita is the largest specialized horticultural lighting company in the world. We are active on all five continents with projects ranging from single fixtures to large greenhouses with well over 100,000 fixtures, serving the retail, research and professional horticultural market.

EZ-GRO

661 Justus Dr. Kingston ON K7M 4H5

Tel: 613-384-8882

Toll free: 877-544-4769

e-mail: info@ez-gro.com

Website: ez-gro.com

Description: EZ-GRO specializes in the manufacturing and distribution of organic nutrients, CFIA registered biostimulants and plant growth regulators, and other specialty agricultural nutrients for fruits, vegetables, field, and greenhouse.

GENERAL HYDROPONICS

3204 NW 38th Circle

Vancouver WA 98660

Tel: 888-478-6544

e-mail: info@hawthornegc.com

Website: generalhydroponics.com

Twitter: twitter.com/GenHydro

Facebook: twitter.com/GenHydro

FINE AMERICAS

1850 Mount Diablo Blvd # 405 Walnut Creek, CA 94596

Tel: 925-932-8800

Toll free: 888-474-3463

Email: info@fine-americas.com

Website: www.fine-americas.com

Description: Fine Americas, Inc. focuses on the development, manufacture and marketing of PGRs and are a recognized center of excellence for PGR technology. Now Concise, their trusted PGR, is registered in Canada!

Description: The leading innovator in the field of hydroponics for more than 40 years. We share your passion for plants - that’s how we got our start, and that’s what keeps driving us forward. Over 40 years ago, an inspired group of scientists, engineers and technicians came together with an ambitious goal: to advance agricultural quality and innovation through the use of key manufacturing processes and cutting-edge research. They succeeded. But it was only the beginning. Our Santa Rosa, Calif., factory uses alternative energy sources and green technologies to save water and power. A specialized farm division has tested over 100 plant varieties for yield, flavor, nutrition, appearance, disease resistance, growth rate and suitability for hydroponic systems. With industry-leading manufacturing and research, we continually develop products that enhance your results while being kind to the environment.

GEORGE DE GROOT LASER GRADING & EXCAVATING INC.

822 Line 2 Rd.

Niagara-on-the-Lake ON L0S 1J0

Tel: 905-933-7810

e-mail: info@degrootlasergrading.com

Website: degrootlasergrading.com

Facebook: facebook.com/degrootlasergrading

Description: All your grading and excavating works from start to finish! We will find the best solution for all grading work that needs to be done inside and outside your greenhouse,

GREENSTAR PLANT PRODUCTS

9430 198th St

Langley BC V1M3C8

Tel: 604-882-7699

e-mail: info@getgreenstar.com

Website: www.getgreenstar.com

Twitter: twitter.com/GrotekNutrients

Facebook: facebook.com/greenstarplant

Description: Greenstar Plant Products, Inc. is an internationally recognized leader in the manufacturing of plant nutrients.

Our brands are Grotek, Gaia Green, Supergreen and EarthSafe.

Grotek has been producing since 1998 and is sold internationally. Gaia Green, EarthSafe and Supergreen are exclusive to Canada and some are sold in US.

HARSTER GREENHOUSES INC.

250 Highway 8

Dundas ON L9H 5E1

Tel: 905-628-2430

Fax: 905-628-4818

e-mail: sales@harster.com

Website: www.harster.com

Description: Commercial potted plant grower specializing in miniature varieties and seasonal gardens. Exotic plants for the home and office with an emphasis on seasonal consumer trends.

HAVECON HORTICULTURAL PROJECTS

360 York Road, Unit 3

Niagara on the Lake ON L0S 1J0

Tel: 905-641-0603

e-mail: jon@havecon.com

Website: www.havecon.com

Facebook: facebook.com/havecon.northamerica.7

GGS STRUCTURES INC.

3559 North Service Rd.

Vineland Station ON L0R 2E0

Tel: 905-562-7341

Fax: 905-562-3011

e-mail: sales@ggsstructures.com

Website: www.ggs-greenhouse.com

Twitter: @GGSSTRUCTURES

Facebook: facebook.com/ggsgreenhouse

Description: GGS is a world-class designer, manufacturer, and installer of commercial greenhouse structures since 1979. Our greenhouses are built to last. Our top priority is the quality of your plant environment. Whether you are looking for a Coldframe, High Tunnel, Freestanding Greenhouse, or a Venlo, Curved Glass or Poly Covered Gutter Connected structure, when designing a greenhouse structure we start with the end result in mind: A Quality Commercial Greenhouse Environment.

GLOBAL HORTICULTURAL INC.

4222 Sann Rd.

Beamsville ON L0R 1B1

Tel: 905-563-3211

Toll free: 800-668-9567

Fax: 905-563-3191

e-mail: sales@globalhort.com

Website: www.globalhort.com

Description: Horticultural supplies and equipment.

Greenstar Plant Products, Inc. produces premium horticultural products and solutions for global, domestic and commercial use. Our brands are utilized by commercial operators including growers, landscapers, greenhouses, nurseries, organic farms, as well as independent retailers. We manufacture plant products for both the retail and commercial market. Our vision is to cultivate mutually beneficial longterm relationships built on trust, quality horticultural products, and world-class service.

GROUPE HORTICOLE LEDOUX INC. (ALSO KNOWN AS BOUTIQUEPRO.GHLINC.COM)

785 rue Paul-Lussier

Ste-Helene-de-bagot QC J0H1M0

Tel: 450-791-2222

Toll free: 888-791-2223

Fax: 450-791-2225

e-mail: ghl@ghlinc.com

Website: www.ghlinc.com

Description: Greenhouse professional supplies & equipment manufacturer and distributor since 1992. Fertilizers, tomato hooks, clips, vegetable seeds, rockwool/coco substrates, disinfection products, irrigation, greenhouse plastic film, ground cover, fans, horticultural lighting, etc.

HARNOIS GREENHOUSES

1044 Principale

St-Thomas (Joliette) QC J0K 3L0

Tel: 450-756-1041

Toll free: 888-427-6647

Fax: 450-756-8389

e-mail: info@harnois.com

Website: www.harnois.com

Twitter: twitter.com/HarnoisHQ

Facebook: facebook.com/HarnoisInc

Description: Division of Harnois Industries, an established leader in the design and manufacturing of innovative steel structures that meet the financial and operation needs of its clients.

Description: Havecon Horticultural Projects is a premier horticultural design and manufacturing company that specializes in high-tech turnkey greenhouse solutions. Located in the global heart of horticulture, the Netherlands, with offices in North America as well.

Havecon is a flexible and customer focused organization that can truly develop projects from financial feasibility studies, land selection and preliminary engineering all the way through a fully functioning facility. We work together with you right through to planting and beyond. Please feel free to contact us and discuss your plan or idea(s) anytime. We will be more than happy to collaborate with you.

HAWTHORNE GARDENING COMPANY

3204 NW 38th Circle

Vancouver WA 98660

Tel: 888-478-6544

e-mail: info@hawthornegc.com

Website: www.hawthornegc.ca

Twitter: twitter.com/hawthornegc

Facebook: facebook.com/HawthorneGC

Description: Welcome to the World of Business Under the Influence We Know Why You Grow. And That Influences Everything. We are a company that is led by a set of principles that motivate us every day. We are under the influence of innovation, passion, family, and the urge to serve. What motivates you inspires us. We are both under the influence of an industry that is here to change the world for the better.

HEIZOMAT CANADA - AUTOMATED WOOD CHIP & BIOMASS HEATING

1502 Kramp Road

Breslau ON N0B1M0

Tel: 844-983-3537

Toll free: 844-983-3537

e-mail: grant@heizomat.ca

Website: www.heizomatbiomass.ca

Twitter: twitter.com/HeizomatCanada

Facebook: facebook.com/HeizomatCanada

Description: Heizomat is a world-leading, German manufacturer of advanced wood chip & biomass heating systems that deliver propane-like convenience, efficiency & reliability at a fraction of the cost.

Fully automated feeding, ignition & operation with loading once a month or year. Self-cleaning fire box & heat exchanger tubes with removeable ash bin for easy disposal. Advanced safety protection with remote monitoring & email alarms.

Operating since 1982, Heizomat’s focus on building smart, heavy duty machines that work hard and last a long time has made them the boiler of choice for greenhouses, farms & rural businesses. There are now more than 50,000 units worldwide.

Heizomat Canada is a family business with rural roots and a commitment to a high level of friendly customer service that matches the quality of our products. We offer a nationwide sales & support network, Canadian-based spare parts for fast delivery & comprehensive training, tech support & proactive monitoring for smooth operation.

HELIOSPECTRA

2 Bloor Street West Suite 2120

Toronto ON M4W 3E2

Tel: +1 888-942-GROW

e-mail: sales@heliospectra.com

Website: www.heliospectra.com

Twitter: twitter.com/Heliospectra

Facebook: facebook.com/heliospectra

Description: Heliospectra was founded in 2006 in Sweden by plant scientists and biologists with one vision - to make crop production more intelligent and resource-efficient. Today, with customers across six continents, Heliospectra is the global leader in innovative horticulture lighting technology, custom light control systems and specialized services for greenhouse and controlled plant growth environments. Heliospectra consistently creates LED grow lights which empower growers to produce crops that taste better, last longer, and take less energy to grow. We are passionate about transforming the horticulture market and finding new sustainable solutions to feed and heal the world.

HIGH Q GREENHOUSES INC.

55431 Range Road 262

Sturgeon County AB T8R 0W7

Tel: 780-939-7490

Fax: 780-939-2010

e-mail: contact@highqgreenhouses.com

Website: www.highqgreenhouses.com

Facebook: highqgreenhouses

Description: Full selection of young plants & finished product. Root & Sell for Selecta First Class and Dummen Orange. Western Canadian distributor for “Nature’s Source Plant Food”, revolutionizing growth and plant performance.

HOOGENDOORN AMERICA INC.

4890 Victoria Ave. N.

Vineland ON L0R 2E0

Tel: 905-562-0800

e-mail: info@hoogendoorn.ca

Website: www.hoogendoorn.ca

Description: Hoogendoorn delivers sustainable automation solutions that seamlessly coordinate all processes and systems in your horticultural organization. Hoogendoorn helps its clients to minimize costs and CO2 emissions and to maximize crop profitability.

HORTAU

966, chemin Olivier, Office 450 Levis QC G7A 2N1

Tel: 418-836-7927

Toll free: 1-888-5-HORTAU

Fax: 418-836-1174

e-mail: cletendre@hortau.com

Website: www.hortau.com

Twitter: twitter.com/hortau

Facebook: facebook.com/hortau

Description: Since 2002, Hortau’s patented irrigation management system has been helping growers keep their plants healthy and use their inputs more efficiently. Our Canadian based company offers monitoring, automation and weather services and field support.

Our proprietary soil tension sensor, a direct measurement of precisely how much water is available to the plant, allows growers to anticipate plant stress and irrigate as needed to prevent damage. This ensures optimal crop growth while reducing water use, energy consumption, and environmental impact.

Data are easily accessible through mobile and Web App.

We continually work with the grower to create irrigation schedules that optimize nutrient absorption, water uptake, and aeration. This, in turn, leads to higher quality crops and increased production along with more efficient use of water and energy.

Hortau Team

HOSKIN SCIENTIFIC

#5-3280 South Service Road West Oakville ON L6L 0B1

Tel: 905-333-5510

Toll free: 800-665-5871

Fax: 905-333-4976

e-mail: sales@hoskin.ca

Website: www.hoskin.ca

Facebook: facebook.com/ HoskinScientificLimited

Description: For over 70 years Hoskin Scientific has provided expert consultative support to find the right product to fit your application needs. Our Environmental Department provides solutions for monitoring and sampling biological and chemical parameters in the environment. Our team of environmental sales representatives and diverse product range guarantee that you will find the right products for your application. Whatever the area of specialty, Hoskin Scientific’s Environmental department can equip you to collect the data you need for your project whether through a purchase or rental.

HUB INTERNATIONAL ONTARIO LIMITED

24 Seacliff Dr. E., Suite 100 Leamington ON N8H 0C2

Tel: 519-326-9339

Toll free: 800-463-4700

e-mail: gary.klemens@hubinternational.com Website: www.hubinternational.com

HYDROGARDENS

1330 Sandhill Dr. Ancaster ON L9G 4V5

Tel: 905-648-1801

Toll free: 1-800-8WeGrow

Fax: 888-749-8677

e-mail: info@hydrogardens.ca

Website: www.hydrogardens.ca

Description: Hydrogardens is a full-line supplier of products including single element & blended fertilizers, peat moss, roof poly, ground covers, seeds, containers, irrigation systems, growing supplies, pesticides, biologicals.

I2I AUTOMATION INC

#104 - 18760-96 Avenue

Surrey BC V4P 3N9

Tel: 778-574-1889

e-mail: enquiries@i2iautomation.com

Website: i2iAutomation.com

Description: At i2i Automation, we develop user friendly Packhouse Management Software that helps improve your operational efficiencies and delivers fast ROI. Features include - Inventory Management, Shipping / Receiving, Traceability, Labour tracking, Job Costing, and Food Safety compliance . we also supply and integrate PTI Label applicators, Inkjet date coders, barcode scanners, RFID systems, Vision Systems, and data collection systems.

IEM INC.

2109 London Line, Unit C Sarnia ON N7T 7H2

Tel: 519-381-9703

e-mail: mark@huzevka.com

Website: www.myengineers.ca

Description: Consulting Engineers Specializing in Large Scale Post Harvest Processing of Cannabis

ITC HORTICULTURE

3030 Corporate Grove Drive

Hudsonville MI 49426

Tel: 616-396-1355

e-mail: sales@itc-us.com

Website: www.itc-Horticulture.com

Facebook: facebook.com/ITCIncorporated

Description: ITC Horticulture is a brand of ITC Incorporated, headquartered in Hudsonville, MIaka Salad Bowl City. We specialize in long linear LED lighting for greenhouse and controlled environment lighting. We stay close to the science of growing by using our lighting in our own labs, by consulting with industry leaders, and working closely with real growers of several different cultivars. We offer a range of products including Propel for tent and additional supplemental lighting, Amplify in multiple spectrums for a range of uses, and Empower for high PPFD plants. We also use engineering software to optimize lighting layouts for even, consistent lighting coverage

JELITTO PERENNIAL SEEDS

125 Chenoweth Lane, Suite 301

Louisville KY 40207

Tel: 502-895-0807

Fax: 502-895-3934

e-mail: maryv@jelitto.com

Website: www.jelitto.com

Twitter: @JelittoSeeds

Facebook: facebook.com/JelittoPerennialSeeds

Description: Jelitto offers quality seed of around 4,000 varieties of perennials, ornamental grasses, and herbs, with a growing list of organic seeds. Breeding and production is under our care.

JIFFY PRODUCTS

5401 Baumhart Rd., Ste. B

Lorain OH 44053

Tel: 440-282-2818

Toll free: 800-323-1047

Fax: 440-282-2853

e-mail: prosales@jiffygroup.com

Website: www.jiffygroup.com

Description: Be the innovation and service leader in sustainable plant growing solutions to feed and beautify the world.

JVK

1894 Seventh Street

St.Catharines ON L2R 6Z4

Tel: 905-641-5599

Toll free: 800-665-1642

Fax: 905-684-6260

e-mail: info@jvk.net

Website: www.jvk.net

Description: Seeds, Plants, Labels, Supplies. Soilless media, coir product, Poppelmann, TO Plastics

Landmark, ICL Specialty Fertilizers, Syngenta, Kientzler, Suntory, Greenfuse, Vivero, Proven Winners, Rakers, Walters, Benary, Pan American, Mastertag and Oasis Products.

JOHNNY’S SELECTED SEEDS

955 Benton Ave

Winslow ME 04901

Tel: 877-564-6697

Fax: 207-238-5375

e-mail: canada@johnnyseeds.com

Website: www.johnnyseeds.com

Twitter: twitter.com/johnnyseeds

Facebook: facebook.com/JohnnySeeds

Description: Since 1973, Johnny’s Selected Seeds has been helping families, friends, and communities by providing superior seeds, tools, supplies, information, and service. We offer vegetable, flower, herb and farm seed, a number of which are certified organic and some are Johnny’s bred varieties. We test everything we sell at our research farm in Albion, Maine and guarantee the quality of all our products.

JOLLY FARMER PRODUCTS INC.

56 Crabbe Rd.

Northampton NB E7N 1R6

Tel: 506-325-3850

Toll free: 800-695-8300

Fax: 800-695-8300

e-mail: sales@jollyfarmer.com

Website: www.jollyfarmer.com

Facebook: facebook.com/jollyfarmerproducts

Description: We are growers of high-quality young plants from seed and vegetative materials. Serving customers across North America, we sell our plants directly, not through the broker network. Our service is especially suited for the small to mid-size growers- very low minimum order required. With more than 3,000 varieties offered in multiple tray sizes, we’re equipped to match any program or budget. Our young plants, including plugs and rooted cuttings of annuals, vegetables, herbs, grasses and perennials, ship nationwide in the US and Canada via our own trucks, and other carriers. In addition, we grow finished plants distributed in the Northeastern US and Atlantic Canada. We offer a wide range of seed and vegetative annuals in flats, pots, hanging baskets, and planters including selections for fall and holiday. We invite you to join our growing list of satisfied customers and experience our commitment to integrity, quality, and reliable service.

KAM’S GROWERS SUPPLY INC.- HEAD OFFICE GUELPH

Unit 2 - 32 Airpark Place Guelph ON N1L 1B2

Tel: 519-821-1684

Toll free: 877-821-1684

Fax: 519-821-5714

e-mail: orders@kams.ca

Website: www.kams.ca

Facebook: facebook.com/kamsgrowers

Description: Kam’s Growers Supply offers a complete line of biological agents (bios), crop protection products, PGRs and plant nutrition products (water soluble fertilizer, straights, micros, organic, slow release fertilizer) for the greenhouse floriculture, greenhouse vegetable, cannabis and nursery markets.

KAM’S GROWERS SUPPLY INC. - KINGSVILLE LOCATION

39 South Talbot Rd. Cottam (Kingsville) ON N0R 1B0

Tel: 519-839-4778

Fax: 519-839-5931

e-mail: kvorders@kams.ca

Website: www.kams.ca

Facebook: facebook.com/kamsgrowers

KOOLJET REFRIGERATION

150 Adams Blvd.

Brantford ON N3S 7V2

Tel: 519-752-2424

Toll free: 866-748-7786

Fax: 519-752-4040

e-mail: info@kooljet.com

Website: www.kooljet.com

Twitter: yes

Description: Custom Built Designs - Greenhouse and processing/packing areas. Domestic and International Markets. One-piece, portable skidmount systems, hydro-coolers, water and glycol process chillers, blast freezers, and refrigerated dehumidifiers.

KOPPERT CANADA LIMITED

3 - 40 Ironside Cres.

Toronto ON M1X 1G5

Tel: 416-291-0040

Toll free: 800-567-4195

Fax: 416-291-0902

e-mail: info@koppert.ca

Website: www.koppert.ca

Twitter: www.twitter.com/Koppert_Canada

Facebook: facebook.com/KoppertCanadaLimited

Description: Koppert Biological Systems produces sustainable cultivation solutions for food crops and ornamental plants. Together with growers and in partnership with nature, we work to make agriculture and horticulture healthier, safer, more productive and resilient. We achieve this by using natural enemies to combat pest infestations, bumblebees for natural pollination, and biostimulants that support and strengthen the crops both above and underground. Restoring and protecting vital ecosystems in a natural way is the basis for healthy crops and a balanced environment. Add our quality know-how and consultancy services to this and you will understand why an increasing number of growers regards us as a partner with whom they can realize their ambitions.

L & R SHELTERS INC.

461 Highway 5

Dundas ON L9H 5E2

Tel: 905-627-1101

Toll free: 866-216-4113

Fax: 905-627-1109

e-mail: info@lrshelters.ca

Website: www.lrshelters.ca

Facebook: L & R Shelters Inc

Description: Manufacturers of freestanding shelter and heavy duty greenhouse kits 17 ft to 30 ft wide at any length. Engineered drawings provided. “RT” Shelters exceed snow-loads of 50 psf.

LABELPAC INC.

8-4080 North Service Rd. E.

Windsor ON N8W 5X2

Tel: 519-944-1000

Fax: 519-944-1003

e-mail: info@labelpac.com

Website: www.labelpac.com

Twitter: twitter.com/labelpac

Facebook: http://facebook.com/LABELPAC

Description: The best eco-friendly technology advanced PLU labeling systems available. Our labels and waste liners are both biodegradable and environmentally safe-PAPER. MOTOHEAD® fruit labeling equipment and labels are backed by a lifetime warranty with local service and support. MOTOHEAD® Label applicator configurations for Multi-lane graders, Bulk labeling, In-Tray labeling, as well as Large Label applicators for watermelon (MOTOHEAD® XL). For our hand applied growers, we have our famous HL-2 Lithium Cordless hand applicators.

LAMBERT PEAT MOSS

106, Lambert Rd.

Riviere-Ouelle QC G0L 2C0

Tel: 418-852-2885

Toll free: 800-463-1313

Fax: 418-852-3352

e-mail: info@lambertpeatmoss.com

Website: www.lambertpeatmoss.com

Description: For over than 90 years, Lambert Peat Moss has been acknowledged as a leader in sphagnum peat moss industry. We offer numerous lines of professional growing mixes and retail potting mixes.

MASTER

PLANT-PROD INC.

314 Orenda Road

Brampton ON L6T 1G1

Tel: 905-793-8000

Toll free: 800-565-4769

e-mail: mppi@plantprod.com

Website: www.plantprod.com

Twitter: @ProdPlant

Facebook: @PlantProd

Description: We at Plant-Prod have strict quality guidelines for all components in our products. Using these pure ingredients also means that you can grow efficiently, use less fertilizer to produce better plants. The various chelating agents within our micronutrient packages ensure that nutrients are available at a wide pH range. Plant-Prod Water Soluble fertilizers have been produced this way for over 75 years, all while creating different analyses to target specific stages of plant growth for peak performance.

When you buy a 15kg bag of Plant-Prod, your plants receive every gram of that fertilizer. Plant-Prod achieves this level of solubility by using the highest quality raw materials on the market.

MAXIMUS

1250, rue Marie-Victorin

Saint-Bruno-de-Montarville QC J3V 6B8

Tel: 450-445-6360

Toll free: 877-445-6556

e-mail: mbarnabe@maximus-systems.com

Website: www.maximus-solution.com

Twitter: twitter.com/MaximusSystems

Facebook: facebook.com/themaximussolution

LANGENDOEN MECHANICAL INC.

1764 South Service Rd.

St. Catharines ON L2R 6P9

Tel: 905-984-8711

e-mail: info@langendoenmechanical.com

Website: www.langendoenmechanical.com

Description: Design+Build turnkey heating systems, cogeneration, heat storage tanks, replacement parts, certified gasfitters, oilfitters, chillers and cooling, steamfitters and welders, boiler retuning, pipe insulation, aluminum container systems, and custom fabrication

Description: MAXIMUS, an environmental condition management expertise at the cutting edge of technology.

The MAXIMUS system offers automation and monitoring solutions for greenhouses: ventilation, humidity, shading, lighting, CO2, irrigation, biosecurity (door access), tank and generator management, etc.

Be connected at all times to continuously control your greenhouse, even remotely!

MEESTER INSURANCE CENTRE

The Village Square, Reg. Rd. 20, PO Box 299 Smithville ON L0R 2A0

Tel: 905-957-2333

Toll free: 800-465-8256

Fax: 905-957-2599

e-mail: info@meesterinsurance.com

Website: www.meesterinsurance.com

Twitter: twitter.com/Meester_Ins

Facebook: facebook.com/MeesterInsurance

Description: Individually tailored Greenhouse Insurance Program

METEOR SYSTEMS

419 Seacliff Dr. E.

Leamington ON N8H 3V7

Tel: 519-324-9900

e-mail: info@meteorsystems.com

Website: www.meteorsystems.nl

Facebook: Meteor Systems NL

Description: Complete Irrigation and cultivation solutions for growing systems.

MICROCOOL

72216 Northshore St. #103-104

Thousand Palms CA 92276-2324

Tel: 760-322-1111

Toll free: 800-322-4364

Fax: 760-343-1820

e-mail: info@microcool.com

Website: www.microcool.com

Twitter: instagram.com/microcoolfog

Facebook: facebook.com/microcool

Description: Suppliers of high-pressure fog systems for cooling, humidification and odor control. Quality pumps with unique safety and control features, hand-adjustable nozzles lines, includes design and support. 35+ Years in Horticulture.

MULTI SHELTER SOLUTIONS

360 King St., PO Box 1125

Palmerston ON N0G 2P0

Tel: 519-343-2335

Toll free: 866-838-6729

Fax: 519-343-2399

e-mail: multisheltersales@gmail.com

Website: www.multisheltersolutions.com

Twitter: TheShelterMan

Facebook: MultiShelterSolutions

Description: We manufacture a wide variety of shapes, sizes and strengths of greenhouses. They can be either plastic or tarp covered and either ground mounted or elevated. North America wide shipping.

NORSECO

2914 Cure-Labelle Blvd.

Laval QC H7P 5R9

Tel: 514-332-2275

Toll free: 800-561-9693

Fax: 450-682-4959

e-mail: info@norseco.com

Website: www.norseco.com

Description: Founded in 1928, NORSECO is one of the most important vegetable, flower seed, young plants and plugs distributors in Canada. We commercialize top quality and innovative varieties.

NORVIEW GARDENS LTD.

2628 Windham Rd 19

Norwich ON N0J 1P0

Tel: 519-468-3547

e-mail: sales@norviewgardens.ca

Website: www.norviewgardens.ca

Description: Growers of quality ornamental grasses in plugs/liners in PL 72, PL 40 & PL 50 sizes and finished in 1L, 15cm & 2 gal potted.

NATURAL INSECT CONTROL

3737 Netherby Rd.

Stevensville ON L0S 1S0

Tel: 905-382-2904

Fax: 905-382-4418

e-mail: insects@naturalinsectcontrol.com

Website: www.naturalinsectcontrol.com

Description: NIC offers Canadian Beneficial Nematodes and Beneficial Insects. NIC is the ONLY Canadian producer of nematodes offering exclusive strains! Master distributor for Applied Bionomics & offer a full array of Beneficial Insects. NIC designs and develops preventative Bio programs for any size operation. Call us for any insect problem.

NEUDORFF NORTH AMERICA

Box 178

Brentwood Bay BC V8M1R3

Tel: 519-803-3261

e-mail: tim.tripp@neudorff.ca

MILLENNIUMSOILS COIR

111 Fourth Ave., Suite 371

St. Catharines ON L2S 3P5

Tel: 905-687-1877

Toll free: 866-256-4040

Fax: 905-687-8635

e-mail: info@vgrove.com

Website: www.vgrove.com

Twitter: @Millenniumsoils

Facebook: facebook.com/Millenniumsoils

Description: For over 30 years, Millenniumsoils Coir has been supplying Coconut Coir to the horticultural industry. We have had excellent success with our custom mixes for vegetable production as well as our ongoing lines for flower and other productions. We can help you achieve ease of growing with top results in all your crops with the knowledge we have of Coconut Coir (90+ years combined knowledge).

Website: http://www.neudorffpro.com

Facebook: facebook.com/neudorffnorthamerica

Description: Neudorff North America (NNA) is an innovative leader in ecologically responsible products for agriculture, turf, and ornamental growers. From small-scale organic farming to large-scale crop production, Neudorff provides high-efficacy, low-impact plant protection products.

NIAGROW SYSTEMS LTD.

3559 North Service Rd.

Vineland Station ON L0R 2E0

Tel: 905-562-6226

Fax: 905-562-6761

e-mail: sales@niagrow.com

Website: www.niagrow.com

Twitter: @ggsstructures

Facebook: facebook.com/ggsgreenhouse

Description: Every Niagrow greenhouse heating system is completely adjusted to make sure you have the right amount of heat in the location you need it, when you need it.

OGENA SOLUTIONS CANADA CORP.

442 Millen Road, Unit 6

Stoney Creek ON L8E 6H2

Tel: 905-664-2125

Toll free: 855-900-8822

Fax: 905-664-2511

e-mail: dhachey@ogenasolutions.com

Website: www.ogenasolutions.com

Description: Ogena Solutions, was formed from the company Anivac Corporation which was created in Canada in 2005. Ogena (pronounced ‚”O-Jenna”) Solutions is dedicated to providing complete effective, environmentally friendly bio-security solutions, equipment and protocols as well as ground breaking (patented) animal bathing systems. It currently operates in the animal health sector including shelters, veterinary, pet boarding and daycare, food animal and general farm applications. Bio-security, green technologies and leading edge bathing systems are central to the company’s product focus. Besides being the Exclusive Master Distributor for Virox Technologies Accelerated Hydrogen Peroxide® disinfectant products in the Canadian Animal Health sector, Ogena’s own equipment products and matching usage protocols are respected as being the best and most efficient products available in animal health today.

OMNI STRUCTURES INTERNATIONAL

18 Seapark Drive, Unit 4

St. Catharines ON L2M 6S6

Tel: 905-687-9011

Toll free: 800-991-0600

e-mail: info@omnicanada.com

Website: www.omnicanada.com

Description: Manufacturers of Cold Frames, Freestanding Greenhouses and Tensioned Covered Utility Structures. Stocking supplier of poly film, polycarbonate panels and fastening tracks. Shipping available across Canada and the United States.

OREON

Lorentzlaan 6IJsselstein - 3401MX

Tel: +31(0)30-7600660

e-mail: info@oreon-led.com

Website: www.oreon-led.com

Twitter: twitter.com/Oreon_led

Description: Oreon is a Dutch innovative developer and manufacturer of high-tech LED grow lights for the horticulture for nearly 15 years. The LED grow lights of Oreon have a unique, active cooling technology which results in a compact and powerful fixture with a high light output and high efficiency. Using water cooled LED lights enables a grower to separate light and heat resulting in full control over the climate in the greenhouse. Another advantage of the water-cooling technology is the possibility of reusing the dissipated heat, making full use of the energy consumption of the LED fixture, resulting in maximum energy saving. LED.LIGHT. GROW.

PALACE PERENNIALS (SIPKENS NURSERIES)

3261 London Line

Wyoming ON N0N 1T0

Tel: 519-542-8353

Toll free: 866-843-0438

Fax: 519-542-1079

e-mail: sales@sipkensnurseries.com

Website: www.palaceperennials.com

Facebook: facebook.com/Sipkensnurseries

Description: Palace Perennials provides 9cm, #1trade and 2 gallon perennials, annuals, vines, clematis, water plants, herbs, tropicals and rack programs with POP for the Ontario garden centers and landscapers.

PANAMERICAN SEED

622 Town Rd.

West Chicago IL 60185

Tel: 630-231-1400

Toll free: 800-231-7065

Fax: 630-293-2557

e-mail: newsandinfo@panamseed.com

Website: www.panamseed.com

Twitter: twitter.com/panamseed

Description: Growers and distributors rely on PanAmerican Seed for the newest and best seed products in the industry. Grow and sell every product with confidence. The industry’s best product quality and availability. Speedy shipping straight to your door. Friendly, on-the-spot customer service, with cutting edge technical advice. Call us today!

PAUL BOERS MANUFACTURING/PRINS GREENHOUSES

3500 South Service Rd.

Vineland Station ON L0R 2E0

Tel: 905-562-4411

Fax: 905-562-5533

e-mail: info@paulboers.com

Website: www.paulboers.com

Facebook: facebook.com/paulboersltd

Description: Paul Boers Manufacturing and Prins Greenhouses supplies complete greenhouse systems. Choose from the Venlo, Gutter Connect, Freestanding and Coldframe Structures, Benches, Irrigation, Environment controls, Heating, Shade systems and Lighting.

PREMIER TECH

1 Avenue Premier

Rivére-du-Loup QC G5R 6C1

Tel: 418-867-8883

e-mail: services@pthorticulture.com

Website: www.pthorticulture.com

Twitter: twitter.com/promixghgrowing

Facebook: facebook.com/promixgreenhousegrowing

Description: Premier Tech PRO-MIX growing media products are enhanced with high-performance active ingredients and are considered a reference in the market, as they represent innovative and unique solutions.

PLANT PRODUCTS INC.

50 Hazelton St.

Leamington ON N8H 3W1

Tel: 519-326-9037

Toll free: 800-387-2449

e-mail: info@plantproducts.com

Website: www.plantproducts.com

Description: Fertilizers (CRF, Water Soluble, Selectus Custom Fertilizer), Pest Control (Biological and Conventional), Syngenta Greenhouse Vegetable Seeds and other consumable goods. Locations: Leamington, ON; Ancaster, ON; Laval, QC and Westland, MI

PLANTECH CONTROL SYSTEMS INC.

3466 South Service Rd.

Vineland Station ON L0R 2E0

Tel: 905-562-7345

e-mail: plantech@plantech.ca

Website: www.plantech.ca

Description: CSA approved electrical control panels, electrical installation, electrical service, greenhouse environmental controls, CO2 burner parts, HAF fans, HID lighting, motors and motor controls, spray robots, as well as sorting and packing equipment.

PRIVA

3468 South Service Road

Vineland Station AZ L0R2E

Tel: 905-562-7351

e-mail: info.na.east@priva.com

Website: www.priva.com

Twitter: twitter.com/PrivaSolutions

Facebook: facebook.com/PrivaNorthAmerica

Description: Priva develops hardware, software and services in the field of climate control, energy saving, labour management and the optimal reuse of water in the horticulture industry.

PROVIDE AGRO

4825 Union Rd.

Beamsville ON L0R 1B4

Tel: 905-563-8261

Toll free: 800-263-1287

Fax: 905-563-7882

e-mail: info@provideag.ca

Website: www.provideag.ca

Description: Custom built packhouse solutions featuring Greefa sorting technologies.

RIJK ZWAAN

701 La Guardia St Ste A

Salinas CA 93905-3360

Tel: 831-455-3000

e-mail: contactusa@rijkzwaan.com

Website: www.rijkzwaanusa.com

Facebook: facebook.com/Rijk-ZwaanUSA-864957990243527

Description: Delivering innovative fruit and vegetable varieties is the core of Rijk Zwaan’s seed business. Rijk Zwaan is a family owned global vegetable breeding company based in The Netherlands, with subsidiaries throughout the world. Our team uses global knowledge to explore the best genetics, local teams provide strong product development, technical support, and chain research about consumer behavior. Together with our partners, we are sharing a healthy future.

RL DISTRIBUTING INC / NIAGARA GREENHOUSE EQUIPMENT.COM

27 Red Haven Drive, PO Box 138

Niagara-on-the-Lake ON L0S 1P0

Tel: 905-329-9409

e-mail: equipmeniagara@gmail.com

Website: niagaragreenhouseequipment.com

Facebook: Niagara Greenhouse Equipment

Description: Our company specializes in equipment and product solutions for the greenhouse and nursery trade. We offer both new and used equipment from quality suppliers such as Logitec BIG BALE, Horticulture Equipment and Services, Bouldin Lawson, Javo, Martin Stolze, Agrinomix and many more with the opportunity for trade-in of your old or retired equipment. We also supply Quality Floral shipping carts in both standard and custom sizes - made to order for your operation. Give us a call or check us out at niagaragreenhouseequipment.com - Randy 905 329 9409

SIGNIFY (FORMERLY PHILIPS LIGHTING)

281 Hillmount Road

Markham ON L6C 2S3

Tel: 289-929-6205

e-mail: horti.info@signify.com

Website: www.philips.com/horti

Twitter: www.twitter.com/philipshorti

Description: Signify, formerly Philips Lighting, offers LED grow lights for growers of ornamentals, fresh fruits and vegetables, lettuces/ leafy greens, and medicinal cannabis, to improve production speed and quality, better manage energy costs, and create new sales opportunities. With nearly 130 years of lighting and technology experience, growers in more than 43 countries currently use Philips LED grow lights in a variety of growing environments, for a variety of food, ornamental, and specialty crops, in both greenhouse and closed-environment ag production.

ROEHM AMERICA LLC

1796 Main Street

Sanford ME 04073

Tel: 855-202-7467

e-mail: info@acrylite.co

Website: www.acrylite.co

Twitter: twitter.com/ACRYLITE

Facebook: facebook.com/ACRYLITE

Description: We are a German engineered, American-based brand specializing in PMMA plastics. We are a business that focuses on making precious plastic material that allows for a constantly growing range of functionalities, paired with durability, and environmental compatibility.

SCOTTS CANADA LTD.

771 Principale St.

Saint-Bonaventure QC J0C 1C0

Tel: 819-396-2293

Toll free: 800-561-5204

Fax: 819-396-2136

e-mail: fafardpro@scotts.com

Website: www.fafardpro.ca

Twitter: N/A

Facebook: N/A

Description: With its Fafard product line, Scotts offers greenhouse and nursery growers an extensive selection of high-performance professional growing mixes that satisfy the specific requirements of their different crops.

SMALL BUSINESS INNOVATIONS

2343 NE 212st Ave

Portland OR 97212-4648

Tel: 503-248-2159

Toll free: 866-515-4909

e-mail: sales@sbiteam.com

Website: http://sbigrower.com

Description: SBI Platform is built specifically for growers and garden centers with a focus on production management and mobile inventory control. We help growers and suppliers manage inventory, operations, payments, point of sale, and more. Driven by our clients and industry, we strive to continually innovate and improve our software. After 18+ years of supporting growers, we know how to maximize efficiency, saving you time and money. Call 866-515-4909, ext. 3 for a quick consultation. Consider SBI your software partner - learn and solve your business problems.

SOLLUM TECHNOLOGIES

465 Rue Saint-Jean, Suite 502

Montreal QC H2Y2R6

Tel: 514-543-6163

Toll free: 866-220-5455

e-mail: info@sollum.tech

Website: sollumtechnologies.com

Facebook: facebook.com/sollumtechs

Description: Inspired by nature, Sollum Technologies was founded in 2015 to offer greenhouse producers the only smart LED lighting solution which dynamically recreates, perfects, and modulates the full spectrum of the Sun’s natural light. It is based in Montreal (Quebec), where its design, development and manufacturing activities are concentrated. It works closely with its clients to create recipes adapted to the growth cycle of each product, regardless of its native climate in the world and the location of the greenhouse. Sollum’s lighting solutions thereby provide unparalleled value in terms of energy savings, productivity and superior produce quality through a flexible, adaptive and easy-to-use application, with great respect for the environment. It was awarded the Solar Impulse Foundation Efficient Solution Label granted to only 1000 technologies in the world.

SOUTHERN IRRIGATION

44160 Yale Rd., Chilliwack BC V2R 3Z9

Tel: 403-394-0042

Toll free: 800-663-2615

Fax: 604-792-0041

e-mail: sales@southernirrigation.com

Website: www.southernirrigation.com

Facebook: @southernirrigationcanada

Description: Southern Irrigation is Canada’s largest Netafim Dealer and is Canada’s leader in irrigation. Our state-of-the-art assembly machinery allows us to supply greenhouse drip systems with shorter delivery times and less cost than ever before. Design, install, supply, maintenance - we do it all.

STOKES SEEDS LTD.

296 Collier Rd. S., Thorold ON L2V 5B6

Tel: 905-688-4300

Toll free: 800-263-7233

e-mail: orderdesk@stokeseeds.com

Website: www.stokeseeds.com

Twitter: @StokeSeeds

Facebook: facebook.com/StokeSeeds

Description: Stokes is committed to assisting all customers, from the large commercial grower to the beginner grower, by supplying the highest quality seed and cuttings, along with the knowhow to support success.

SYNGENTA FLOWERS, LLC

2280 Hecker Pass Hwy. Gilroy CA 95020

Tel: 408-847-7333

Toll free: 800-549-0158

Fax: 408-848-5429

e-mail: syngentaflowers.us@syngenta.com

Website: www.syngentaflowers-us.com

Twitter: @syngentafhg

Facebook: facebook.com/syngentaflowersNA

Description: Syngenta Flowers North America is one of the largest wholesale breeders of hybrid flower seed and cuttings in the world -developing and producing flower seeds and cuttings for growers internationally.

TAKS HANDLING SYSTEMS B.V.

Munnikenheiweg 58

Etten-Leur - 4879 NG

Tel: 0031 76 524 5200

Fax: 0031 76 5229902

e-mail: sales@taks.nl

Website: www.taks.nl

Twitter: @systemstaks

Facebook: Taks Handling Systems

Description: Taks Handling Systems is one of the leading manufacturers of harvest logistic solutions for greenhouse horticulture. All highgrade harvest processing and packing systems for internal transport, sorting, packing, palletising, tracking and tracing. Service Department Canada: 419 Seacliff Drive East, Leamington, Ontario N8H 3V7

TERIS

3180, Montee St-Aubin

Laval QC H7L 3H8

Tel: 888-622-2710

Fax: 888-749-8677

e-mail: info@teris.co

Website: www.teris.co

Description: TERIS is a provider of procurement services for horticultural greenhouse & nursery producers, garden centers, municipalities, landscapers and pest control. 4 warehouses in Laval, Quebec, St-Remi and Ancaster (ON).

TOWN OF DRAYTON VALLEY

5400 22nd Ave

Drayton Valley AB T7A 0C5

Tel: 780-621-8382

e-mail: jcarter@draytonvalley.ca

Website: www.draytonvalley.ca

Description: The Town of Drayton Valley is looking for investors to take part in a local greenhouse initiative to participate in the emerging industry of locally sourced strawberries.

This opportunity available in Drayton Valley comes with a proposed business model, a committed end user, and full support from the Town. Drayton Valley is working hard to create diversity and alternative industry to meet the demands of the community.

If you are an enthusiastic entrepreneur who is passionate about contributing to the development of a sustainable community in Drayton Valley, we’d love to hear from you!

For more information on this exciting opportunity, contact Jenn Carter at 780-621-8382

TERRALINK HORTICULTURE INC.

464 Riverside Rd

Abbotsford BC V2S 7M1

Tel: 604-864-9044

Toll free: 800-661-4559

Fax: 604-864-8418

e-mail: info@tlhort.com

Website: www.tlhort.com

Twitter: twitter.com/Tlhort

Facebook: facebook.com/TerraLinkHorticulture

Description: TerraLink is a leading supplier of nutrients, crop protection products, beneficial insects, seeds, growing media and hard goods to professional greenhouse vegetable, floral, medicinal and nursery growers in Western Canada.

TRIPLE GREEN PRODUCTS

Box 119, RR1

Morris MB R0G 1K0

Tel: 204-746-6333

Toll free: 855-373-2378

e-mail: info@triplegreenproducts.com

Website: www.triplegreenproducts.com

Description: Talk to Triple Green Products about how to reduce heating costs by 50% or more in a reliable and affordable way. Sales, Service and Install

VETOQUINOL CANADA

2000 Chemin Georges

Lavaltrie QC J5T 3S5

Tel: 450-586-2252

Toll free: 800-363-1700

Fax: 450-586-4649

e-mail: annick.lafrance@vetoquinol.com, dave. vanwalleghem@vetoquinol.com, jacqueline.denton@vetoquinol.com

Website: biosecurity.vetoquinol.ca

Facebook: facebook.com/VetoquinolClub

Description: Vetoquinol is dedicated to helping greenhouse growers achieve optimum performance in biosecurity. Combined with technical support, our line of products includes cleaners & disinfectants (i.e. Virkon-Greenhouse, BiosolvePlus, Biosentry-904), insecticides and rodenticides. Visit our biosecurity website to access our free Greenhouse Biosecurity Program and to find all the information you need to properly use our biosecurity products.

VIRO GLOBAL TRADE INC.

735 Waterloo Row Fredericton NB E3B 1Z6

Tel: 506-460-8696

Toll free: 877-744-2469

Fax: 506-460-8521

e-mail: viroglobal@haimy.com

Website: www.viroglobaltrade.com

THE HC COMPANIES

2450 Edison Blvd, Suite 3, Suite 3

Twinsburg OH 44087

Tel: 800-225-7712

e-mail: customersupport@hc-companies.com

Website: hc-companies.com

Facebook: facebook.com/HCCompanies

Description: The HC Companies continues to lead the way in the manufacturing of horticultural containers. We are a proud culmination of many storied brands in the horticultural container industry. Highly regarded names such as Dillen®, ITML®, Kord, Amerikan® and Listo® have helped shape the innovative company we are today. From our round, square and decorative containers, to our hanging baskets and trays, to our full line of sustainable fiber products - HC is your one-stop-shop for all your growing container needs.

We continue to support YOU, the professional grower, grower-distributor, retail garden center and mass merchandiser, so you can achieve industry success throughout North America. With the latest product innovations and manufacturing techniques, HC will help you get there.

UPL

138 Dovercliffe Rd.

Guelph ON N1G 3A6

Tel: 866-761-9397

Toll free: 866-761-9397

e-mail: mark.mclear@upl-ltd.com

Website: www.gowithwhatworks.ca Facebook: facebook.com/UPLNorthAmerica

Description: UPL offers a portfolio of consistent and reliable products to protect your investment from a broad spectrum of diseases and pests. With trusted fungicides, insecticides, miticides, herbicides, plant growth regulators and a bactericide, you can grow confidently, knowing you’ve got the tools you need for a healthy crop.

For more information about crop essentials from UPL, visit www.gowithwhatworks.ca

Description: Shipping carts, shipping racks, grower racks, grower benches, display racks and shopping carts. Designs and sizes are customized to buyers’ needs. Hot dip galvanized or powder coated. Manufactured in Vietnam. Factory-direct.

VRE SYSTEMS

7367 Young St., RR 1 Grassie ON L0R 1M0

Tel: 905-945-8863

Toll free: 800-499-4873

Fax: 905-945-9294

e-mail: info@vresystems.com

Website: www.vresystems.com

Twitter: @VRESystems

Facebook: VRESystems

Description: VRE Systems has been in business for over 40 years, supplying high quality products and services to the retail garden centre, horticultural, greenhouse and professional grower industries.

For retail garden centres, VRE manufactures durable and long lasting customer service carts, benches, displays and merchandisers, as well as structures such as round houses, cash huts, shaders, sidewalk structures and more. Our products are proudly manufactured in house in Canada, are made of high quality materials such as steel, which is then hot dip galvanized for the ultimate durability. For horticultural companies, we manufacturing greenhouse benching, monorails, and transportation carts. We also have significant experience designing, manufacturing and installing shade, light deprivation and blackout curtain systems for greenhouses. We also offer a line of products for cannabis growers, including drying trays, grow carts and drying racks. If you want professional products, call VRE Systems.

WATER ENERGY TECHNOLOGIES

3375 North Service Rd., #A7

Burlington ON L7N 3G2

Tel: 905-336-7666

Toll free: 800-561-5235

Fax: 905-336-5714

e-mail: info@waterentech.com

Website: www.waterentech.com

Description: Water purification equipment and water treatment chemicals, including reverse osmosis, filtration, ion exchange, UV light sterilization, chemical feed pumps & controllers, disinfectants and boiler, cooling & potable water programs.

WELLMASTER PIPE AND SUPPLY INC.

1494 Bell Mill Side Rd.

Tillsonburg ON N4G 4J1

Tel: 519-688-0500

Toll free: 800-387-9355

Fax: 519-688-0563

e-mail: dwhite@wellmaster.ca

Website: www.wellmaster.ca

Twitter: @wellmaster1987

Facebook: facebook.com/wellmaster1987

Description: Benches(Rectangular, Square, Hexagon, Multiple Deck)

Carts(Hook-in, Side Sliding, Folding, Nesting/ Shopping, Rhino, Du-All Barrow, 360 Degree)

Racks(Display, Multiple level, Custom Designed) Wagons(4-Wheel Steer Tracking, Multiple Deck, Navigator)

Trailers and Water Trucks

WESTBROOK GREENHOUSE SYSTEMS

4670 South Service Rd.

Beamsville ON L0R 1B1

Tel: 289-432-1199

Toll free: 855-945-0806

Fax: 905-563-9304

e-mail: mail@westbrooksystems.com

Website: www.westbrooksystems.com

Description: Westbrook Greenhouse Systems offers an extensive selection of greenhouse structures and their related products, including heating and benches, customized to the unique needs of each grower.

WESTGROW BIOLOGICAL SOLUTIONS INC. / THE BUG LADY

PO Box 769

Fort Langley BC V1M 2S2

Tel: 604-888-5026

Fax: 604-888-5046

e-mail: bob@westgrowbios.ca

Website: www.thebuglady.ca

Facebook: The Bug Lady Instagram @ thebugladywgb

Description: Distributor of biological controls including insects, mites, and nematodes. Main supplier is Applied Bionomics (insects and mites); also nematodes from BASF (was Becker Underwood) and the complete Biobest product line.

We sell wholesale, direct to commercial greenhouses and also carry the BugLady line of products for re-sale through retail garden centers (check us out at thebuglady.ca). Wholesale price lists available upon request.

We bring in & re-ship biologicals as fresh products, same day, twice a week, and reach 90% of Canada in 1-2 days via expedited couriers.

Our suppliers are well known for the quality of their products:

Applied Bionomics: the focus is on freshness, which their mass-production competitors can’t match. Fresh (non-refrigerated) bios live longer, lay more eggs, and search better than stored biologicals.BASF: high-quality producer of commercial nematodes for several decades.

Biobest: one of the largest bio companies, with a vast array of products.

WESTLAND GREENHOUSE SOLUTIONS INC.

4301 Jordan Rd.

Jordan Station ON L0R 1S0

Tel: 905-562-0225

Toll free: 877-384-1242

Fax: 905-562-6607

e-mail: sales@westlandgs.com

Website: www.westlandgs.com

Twitter: twitter.com/@westlandgs

Facebook: facebook.com/westlandgs

Description: We offer advice to create your ideal greenhouse. We manufacture and build greenhouses, and offer shade and blackout systems, benches and greenhouse supplies.

WILLOWBROOK NURSERIES

935 Victoria Ave.

Fenwick ON L0S 1C0

Tel: 905-892-5350

Fax: 905-892-3790

e-mail: john@willowbrooknurseries.com

Website: www.willowbrooknurseries.com

Description: Nursery Stock: Container grown Evergreens, Vines, Flowering Shrubs, Broadleaf Evergreens, Perennials, Ground Covers, Hostas, Clematis, Euonymus, Shrubs, Rhododendrons, Fruit Trees, Dwarf Trees, Garden Roses, Ornamental Grasses and Shade Trees

YUXIN ULTRA-CLEAR GLASS TECHNOLOGY CO., LTD

13-34, Building 1, No. 53 Science Ave., Zhengzhou City, 450000, China Zhengzhou - 450000

Tel: 371-865-5563

e-mail: frank@hnyxlc.com

Website: www.yuhua-glass.com

Description: For decades, we are committed to supply the most advanced glass for greenhouse horticulture industry, and our brand ”Yuhua Glass” has been well recognized by global growers and greenhouse builders. With highest LT standard in the world (>97.5% and 98.5% in average), we are happy to help bring the most sunshine into your greenhouse!

ZODEGA

7026 Old Katy Road,, Suite 259

Houston TX 77024

Tel: 346-446-4256

e-mail: zodegamktg@gmail.com

Website: www.zodega.com

Twitter: twitter.com/zodegahouston

Facebook: web.facebook.com/ZodegaHouston

Description: “Full service, all-inclusive Houston home and commercial lawn maintenance service for a predictable monthly cost

When you partner with Zodega TIS you’re not just hiring a landscaping company, you’re aligning your home or business with a residential and commercial services provider. Our unique model allows you to bundle all of your landscaping, irrigation system, and many maintenance needs into one predictable monthly cost.

Our services include: Lawn Maintenance (Robotic & Traditional) Landscaping Pest Control Power Washing”

ZWART SYSTEMS

4881 Union Rd. Beamsville ON L0R 1B4

Tel: 905-563-9606

WFS LTD.

213 Talbot St. West

Leamington ON N8H 1N8

Tel: 800-265-7408

Toll free: 800-265-7408

e-mail: jmoore@wfsltd.com

Website: wfsltd.com

Description: WFS Ltd. is a value added distribution company focusing on markets for MRO (Maintenance, Repair and Operations) products, health, safety products and plumbing. As these markets are extremely diverse and highly complex, many opportunities exist for WFS to provide innovative solutions to customer needs.

Toll free: 800-932-9811

Fax: 905-563-9238

e-mail: info@zwartsystems.ca

Website: www.zwartsystems.ca

Description: Specializing in the Design, Supply, Install and Service of Custom Irrigation Systems. Greenhouse Supplies. Greenhouse Internal Logistic Systems - Moving Tables, Conveyor Belts, Design.

EQUIPMENT, SUPPLIES & SERVICES

ACCOUNTING & FINANCIAL SERVICES

Small Business Innovations

AIR CONDITIONING

Enertec Engineering

Enertec Mechanical

Hawthorne Gardening Company

Heizomat Canada Biomass Heating

Langendoen Mechanical Inc.

Maximus

Niagrow Systems Ltd.

ALARM SYSTEMS

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hortau

Hoskin Scientific

Maximus

Plantech Control Systems Inc.

ASSOCIATIONS/TRADE SHOWS

Flowers Canada Growers Inc.

Small Business Innovations

BACTERICIDES

BioSafe Systems

BioWorks

Evergro Division, Nutrien Solutions

Kam’s Growers Supply Inc.

Ogena Solutions Canada Corp.

TerraLink Horticulture Inc.

UPL

Vetoquinol Canada

Water Energy Technologies

BAGS, PLASTIC

A-ROO Company LLC

A.M.A. Horticulture Inc.

Global Horticultural Inc.

Hawthorne Gardening Company

Teris

WFS Ltd.

BAMBOO

A.M.A. Horticulture Inc.

Global Horticultural Inc.

Hydrogardens

JVK

Teris

TerraLink Horticulture Inc.

BASKETS, HANGING

A-ROO Company LLC

A.M.A. Horticulture Inc.

Evergro Division, Nutrien Solutions

Global Horticultural Inc.

Hydrogardens

JVK

Plant Products Inc.

Teris

The HC Companies

Viro Global Trade Inc.

BENCHES

Botanicare

DeCloet Greenhouse Mfg. Ltd.

GGS Structures Inc.

Global Horticultural Inc.

Harnois Greenhouses

Hawthorne Gardening Company

Langendoen Mechanical Inc.

Paul Boers Manufacturing

/Prins Greenhousess

Viro Global Trade Inc.

VRE Systems

Wellmaster Pipe and Supply Inc.

Westbrook Greenhouse Systems

Westland Greenhouse Solutions Inc.

WFS Ltd.

Zwart Systems

BIOLOGICAL CONTROLS

Andermatt Canada

BioSafe Systems

BioWorks

Crop Defenders Ltd.

Dosatron/Dilution Solutions

Evergro Division, Nutrien Solutions

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Kam’s Growers Supply Inc.

Koppert Canada Limited

Natural Insect Control

Ogena Solutions Canada Corp.

Plant Products Inc.

Premier Tech

TerraLink Horticulture Inc.

UPL

WestGrow Biological Solutions Inc. / The Bug Lady

BOILERS

Enertec Engineering

Enertec Mechanical

Heizomat Canada

Langendoen Mechanical Inc.

Niagrow Systems Ltd.

RL Distributing Inc.

Triple Green Products

Westbrook Greenhouse Systems

WFS Ltd.

BOOKS

Natural Insect Control

BREEDING/PATENTS

Rijk Zwaan

Syngenta Flowers, LLC

BUDDING & GRAFTING

SUPPLIES

A.M.A. Horticulture Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

TerraLink Horticulture Inc.

BUNK HOUSE SUPPLIES

BeddingSuperstore.com

Ogena Solutions Canada Corp.

WFS Ltd.

BURLAP

Hydrogardens

Teris

WFS Ltd.

BURNERS

Enertec Engineering

Enertec Mechanical

Global Horticultural Inc.

Niagrow Systems Ltd.

WFS Ltd.

CARBON DIOXIDE

Enertec Engineering

Enertec Mechanical

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hoskin Scientific

Langendoen Mechanical Inc.

Niagrow Systems Ltd.

CARE TAGS

A-ROO Company LLC

Bellwyck / Horticolor

Global Horticultural Inc.

JVK

WFS Ltd.

CARTS

A-ROO Company LLC

A.M.A. Horticulture Inc.

GGS Structures Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Paul Boers Manufacturing /Prins Greenhousess

RL Distributing Inc.

Small Business Innovations

Viro Global Trade Inc.

VRE Systems

Wellmaster Pipe and Supply Inc.

Westland Greenhouse Solutions Inc.

WFS Ltd.

CLIMATE CONTROL/ AUTOMATION

Argus Control Systems Ltd.

Ceegreen

Climate Control Systems

Climatrol Solutions Ltd.

Cravo Equipment Ltd.

DeCloet Greenhouse Mfg. Ltd.

Exacon Inc.

GGS Structures Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hawthorne Gardening Company

Heizomat Canada

Heliospectra

Hoogendoorn America Inc.

Hoskin Scientific

Hydrogardens

IEM Inc.

Maximus

Niagrow Systems Ltd.

Paul Boers Manufacturing /Prins Greenhouses

Plantech Control Systems Inc.

Priva

RL Distributing Inc.

COMPOSTERS

Triple Green Products

WFS Ltd.

COMPUTER SYSTEMS

Argus Control Systems Ltd.

Ceegreen

Climatrol Solutions Ltd.

Cravo Equipment Ltd.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hoogendoorn America Inc.

i2i Automation Inc

IEM Inc.

Maximus

Plantech Control Systems Inc.

Priva

CONSULTING

Ag Energy Co-operative Ltd.

Agrolux Canada Ltd.

Bellwyck

Ceegreen

Crop Defenders Ltd.

Enertec Engineering

Enertec Mechanical

Havecon Horticultural Projects

Heliospectra

IEM Inc.

Koppert Canada Limited

TerraLink Horticulture Inc.

Vetoquinol Canada

CONTAINERS

A-ROO Company LLC

A.M.A. Horticulture Inc.

Evergro Division, Nutrien Solutions

Global Horticultural Inc.

Hawthorne Gardening Company

Hydrogardens

Jiffy Products

Johnny’s Selected Seeds

JVK

Langendoen Mechanical Inc.

Teris

TerraLink Horticulture Inc.

The HC Companies

WFS Ltd.

CONVEYORS

Bellpark Horticulture

Ben Berg Farm & Industrial Equip.

Bouldin & Lawson

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

i2i Automation Inc

Plantech Control Systems Inc.

Provide Agro

RL Distributing Inc.

TAKS Handling Systems B.V.

WFS Ltd.

Zwart Systems

COOLERS

Agrozone International Inc.

Enertec Mechanical

Kooljet Refrigeration

Niagrow Systems Ltd.

COOLING EQUIPMENT

Agrozone International Inc.

Canarm Ltd.

DeCloet Greenhouse Mfg. Ltd.

Dosatron/Dilution Solutions

Enertec Engineering

Enertec Mechanical

Exacon Inc.

GGS Structures Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hawthorne Gardening Company

JVK

Kooljet Refrigeration

Langendoen Mechanical Inc.

Maximus

MicroCool

Niagrow Systems Ltd.

Zwart Systems

CURTAINS, BLACKOUT/ ENERGY

Ceegreen

Cravo Equipment Ltd.

GGS Structures Inc.

Global Horticultural Inc.

Harnois Greenhouses

Paul Boers Manufacturing /Prins Greenhousess

VRE Systems

Westland Greenhouse Solutions Inc.

DISINFECTANTS

Agrozone International Inc.

BioSafe Systems

Evergro Division, Nutrien Solutions

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

JVK

Kam’s Growers Supply Inc.

Ogena Solutions Canada Corp.

Plant Products Inc.

Teris

TerraLink Horticulture Inc.

Vetoquinol Canada

Water Energy Technologies

WFS Ltd.

EDUCATION/TRAINING

Canadian Greenhouse Conference

IEM Inc.

Priva

Small Business Innovations

Vetoquinol Canada

ELECTRICAL SERVICES/ SUPPLIES

Ag Energy Co-operative Ltd.

Ceegreen

Climatrol Solutions Ltd.

Plantech Control Systems Inc.

FANS

Canarm Ltd.

Ceegreen

Climatrol Solutions Ltd.

DeCloet Greenhouse Mfg. Ltd.

ElectroMecaniQue

Enertec Mechanical

Exacon Inc.

GGS Structures Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hawthorne Gardening Company

Hydrogardens

Kooljet Refrigeration

Multi Shelter Solutions

Niagrow Systems Ltd.

Plantech Control Systems Inc.

Priva

RL Distributing Inc.

Teris

Westland Greenhouse Solutions Inc.

WFS Ltd.

Zwart Systems

FERTILIZER EQUIPMENT

Ben Berg Farm & Industrial Equip.

Ceegreen

Climate Control Systems

Dosatron/Dilution Solutions

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

JVK

Plant Products Inc.

Priva

Teris

TerraLink Horticulture Inc.

Zwart Systems

FERTILIZERS

A.M.A. Horticulture Inc.

Acti-Sol

BioWorks

Evergro Division, Nutrien Solutions

EZ-GRO

General Hydroponics

Global Horticultural Inc.

Greenstar Plant Products

Groupe Horticole Ledoux Inc

High Q Greenhouses Inc.

Johnny’s Selected Seeds

JVK

Kam’s Growers Supply Inc.

Master Plant-Prod Inc.

Natural Insect Control

Plant Products Inc.

Scotts Canada Ltd.

Teris

TerraLink Horticulture Inc.

FIBREGLASS

FILM

A-ROO Company LLC

A.M.A. Horticulture Inc.

Evergro Division, Nutrien Solutions

GGS Structures Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hydrogardens

Johnny’s Selected Seeds

Omni Structures International

Teris

Westland Greenhouse Solutions Inc.

WFS Ltd.

Zwart Systems

FLAT AND POT FILLING

EQUIPMENT

A.M.A. Horticulture Inc.

Bellpark Horticulture

Ben Berg Farm & Industrial Equip.

Bouldin & Lawson

FLATS

A.M.A. Horticulture Inc.

Johnny’s Selected Seeds

JVK

TerraLink Horticulture Inc.

WFS Ltd.

FLOOD FLOORS

George de Groot Laser Grading & Excavating Inc.

Niagrow Systems Ltd.

Southern Irrigation

FOGGERS

A.M.A. Horticulture Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

MicroCool

Teris

Vetoquinol Canada

FUELS/BIOMASS

Ag Energy Co-operative Ltd.

Heizomat Canada

Langendoen Mechanical Inc.

Niagrow Systems Ltd.

Triple Green Products

FUMIGANTS

TerraLink Horticulture Inc.

FUNGICIDES

Andermatt Canada

Belchim Crop Protection Canada

BioSafe Systems

BioWorks

Crop Defenders Ltd.

Dosatron/Dilution Solutions

Evergro Division, Nutrien Solutions

General Hydroponics

Global Horticultural Inc.

JVK

Kam’s Growers Supply Inc.

Ogena Solutions Canada Corp.

Plant Products Inc.

Teris

TerraLink Horticulture Inc.

UPL

Vetoquinol Canada

GARDEN CENTRE SUPPLIES

A-ROO Company LLC

A.M.A. Horticulture Inc.

ASB Greenworld Ltd.

Botanicare

General Hydroponics

GGS Structures Inc.

Global Horticultural Inc.

Hawthorne Gardening Company

Hydrogardens

JVK

Lambert Peat Moss

Natural Insect Control

Ogena Solutions Canada Corp.

RL Distributing Inc.

Small Business Innovations

Teris

TerraLink Horticulture Inc.

VRE Systems

Wellmaster Pipe and Supply Inc.

WestGrow Biological Solutions Inc.

/ The Bug Lady

WFS Ltd.

GENERATORS

Ben Berg Farm & Industrial Equip.

Groupe Horticole Ledoux Inc.

Hoskin Scientific

Niagrow Systems Ltd.

Plantech Control Systems Inc.

WFS Ltd.

GLASS

GGS Structures Inc.

Yuxin Ultra-Clear Glass Technology Co., Ltd

GLAZING & PAINTING

Plant Products Inc.

WFS Ltd.

GLAZING CEMENT

WFS Ltd.

GRADING & SORTING MACHINES

Bellpark Horticulture

i2i Automation Inc

LABELPAC Inc.

Plantech Control Systems Inc.

Provide Agro

RL Distributing Inc.

GREENHOUSE COVERINGS

Cravo Equipment Ltd.

DeCloet Greenhouse Mfg. Ltd.

Evergro Division, Nutrien Solutions

GGS Structures Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hydrogardens

Johnny’s Selected Seeds

JVK

L & R Shelters Inc.

Multi Shelter Solutions

Omni Structures International

Paul Boers Manufacturing /Prins Greenhousess

Roehm America LLC

Teris

TerraLink Horticulture Inc.

Westland Greenhouse Solutions Inc.

GREENHOUSE STRUCTURES

Cravo Equipment Ltd.

DeCloet Greenhouse Mfg. Ltd.

Dool International B.V.

George de Groot Laser Grading & Excavating Inc.

GGS Structures Inc.

Global Horticultural Inc.

Harnois Greenhouses

Havecon Horticultural Projects

Hoogendoorn America Inc.

Johnny’s Selected Seeds

JVK

L & R Shelters Inc.

Multi Shelter Solutions

Omni Structures International

Paul Boers Manufacturing /Prins Greenhousess

Roehm America LLC

Town of Drayton Valley

Westbrook Greenhouse Systems

Westland Greenhouse Solutions Inc.

GREENHOUSES, HOBBY

Ben Berg Farm & Industrial Equip.

Global Horticultural Inc.

L & R Shelters Inc.

Multi Shelter Solutions

Omni Structures International

Town of Drayton Valley

GROWTH ENHANCERS

Andermatt Canada

Evergro Division, Nutrien Solutions

EZ-GRO

Greenstar Plant Products

Plant Products Inc.

Premier Tech

TerraLink Horticulture Inc.

GROWTH REGULATORS

Evergro Division, Nutrien Solutions

EZ-GRO

Global Horticultural Inc.

Hoskin Scientific

JVK

Kam’s Growers Supply Inc.

Plant Products Inc.

TerraLink Horticulture Inc.

UPL

HEAT PUMPS, GROUND

WATER

ElectroMecaniQue

Enertec Engineering

Enertec Mechanical

Hoskin Scientific

Langendoen Mechanical Inc.

Niagrow Systems Ltd.

HEAT, BOTTOM

Enertec Engineering

Enertec Mechanical

Global Horticultural Inc.

Harnois Greenhouses

Heizomat Canada

Langendoen Mechanical Inc.

Niagrow Systems Ltd.

Paul Boers Manufacturing /Prins Greenhousess

WFS Ltd.

HEATING EQUIPMENT

Enertec Engineering

Enertec Mechanical

Exacon Inc.

Global Horticultural Inc.

Harnois Greenhouses

Heizomat Canada

Langendoen Mechanical Inc.

Maximus

Niagrow Systems Ltd.

Paul Boers Manufacturing /Prins Greenhousess

RL Distributing Inc.

Triple Green Products

Westbrook Greenhouse Systems

Westland Greenhouse Solutions Inc.

WFS Ltd.

HERBICIDES

Belchim Crop Protection Canada

BioSafe Systems

Dosatron/Dilution Solutions

Evergro Division, Nutrien Solutions

Global Horticultural Inc.

JVK

Kam’s Growers Supply Inc.

Natural Insect Control

Plant Products Inc.

TerraLink Horticulture Inc.

UPL

HOSE REELS

Global Horticultural Inc.

Southern Irrigation

WFS Ltd.

HUMIDIFICATION EQUIPMENT

Exacon Inc.

Groupe Horticole Ledoux Inc

Harnois Greenhouses

Hawthorne Gardening Company

Maximus

MicroCool Zwart Systems

HYDRAULIC EQUIPMENT/ SERVICE

Ben Berg Farm & Industrial Equip.

HYDROPONIC EQUIPMENT/ SUPPLIES

A-ROO Company LLC

A.M.A. Horticulture Inc.

Agrozone International Inc.

Dosatron/Dilution Solutions

Enertec Mechanical

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Jiffy Products

Meteor Systems

Millenniumsoils Coir

Southern Irrigation

Teris

Town of Drayton Valley Zwart Systems

INJECTORS

Ceegreen

Climate Control Systems

Dosatron/Dilution Solutions

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

JVK

Plant Products Inc.

Plantech Control Systems Inc.

Priva

Southern Irrigation

Teris

TerraLink Horticulture Inc.

Zwart Systems

INSECT CONTROL

Andermatt Canada

Belchim Crop Protection Canada

BioSafe Systems

Crop Defenders Ltd.

Dosatron/Dilution Solutions

Evergro Division, Nutrien Solutions

General Hydroponics

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hawthorne Gardening Company

JVK

Kam’s Growers Supply Inc.

Koppert Canada Limited

Natural Insect Control

Plant Products Inc.

Teris

TerraLink Horticulture Inc.

UPL

Vetoquinol Canada

WestGrow Biological Solutions Inc. / The Bug Lady

Westland Greenhouse Solutions Inc.

INSERTS

A.M.A. Horticulture Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

WFS Ltd.

INSULATION

Ceegreen

Enertec Engineering

Enertec Mechanical

Langendoen Mechanical Inc.

Niagrow Systems Ltd.

WFS Ltd.

INSURANCE

HUB International Ontario Limited

Meester Insurance Centre

IRRIGATION EQUIPMENT/ SYSTEMS

A.M.A. Horticulture Inc.

Argus Control Systems Ltd.

Bellpark Horticulture

Ceegreen

Climatrol Solutions Ltd.

Dosatron/Dilution Solutions

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hawthorne Gardening Company

Hortau

Hydrogardens

Johnny’s Selected Seeds

JVK

Meteor Systems

Niagrow Systems Ltd.

Paul Boers Manufacturing

/Prins Greenhousess

Priva

RL Distributing Inc.

Southern Irrigation

Teris

WFS Ltd.

Zwart Systems

LABELING EQUIPMENT

A.M.A. Horticulture Inc.

i2i Automation Inc

LABELPAC Inc.

Provide Agro

WFS Ltd.

LABELS

A-ROO Company LLC

A.M.A. Horticulture Inc.

Bellwyck / horticolor

Global Horticultural Inc.

i2i Automation Inc

Johnny’s Selected Seeds

JVK

LABELPAC Inc.

Teris

WFS Ltd.

LABORATORY SERVICES

A & L Canada Laboratories Inc.

Evergro Division, Nutrien Solutions

Hoskin Scientific

Small Business Innovations

TerraLink Horticulture Inc.

LABORATORY TESTING/KITS

A & L Canada Laboratories Inc.

Hoskin Scientific

Water Energy Technologies

LABOUR MANAGEMENT

Climatrol Solutions Ltd.

Hoogendoorn America Inc.

i2i Automation Inc

Priva

Small Business Innovations

LANDSCAPE FABRICS

Evergro Division, Nutrien Solutions

Global Horticultural Inc.

Hydrogardens

Johnny’s Selected Seeds

Plant Products Inc.

Teris

TerraLink Horticulture Inc.

WFS Ltd.

LIGHTING

Agrolux,a Hawthorne Gardening Company

Canarm Ltd.

Climate Control Systems

Dutch Lighting Innovations

Gavita

GGS Structures Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hawthorne Gardening Company

Heliospectra

Hydrogardens

ITC Horticulture

Langendoen Mechanical Inc.

Oreon

Paul Boers Manufacturing /Prins Greenhousess

Plantech Control Systems Inc.

RL Distributing Inc.

Signify (formerly Philips Lighting)

Sollum Technologies

Teris

WFS Ltd.

MARKERS, BEDDING PLANT

A.M.A. Horticulture Inc.

Global Horticultural Inc.

Johnny’s Selected Seeds

JVK

MATERIAL HANDLING

EQUIPMENT

Ben Berg Farm & Industrial Equip.

Hoskin Scientific

i2i Automation Inc

TAKS Handling Systems B.V.

Wellmaster Pipe and Supply Inc.

WFS Ltd.

Zwart Systems

MERCHANDISING/RETAIL

Small Business Innovations

Town of Drayton Valley

VRE Systems

METERS, NUTRIENT

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hoskin Scientific

Plant Products Inc.

Plantech Control Systems Inc.

Teris

TerraLink Horticulture Inc.

WFS Ltd.

Zwart Systems

MISTING EQUIPMENT

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hawthorne Gardening Company

Meteor Systems

MicroCool

Zwart Systems

MONITORS

Groupe Horticole Ledoux Inc.

Hortau

IEM Inc.

Maximus

Water Energy Technologies

MOTORS

Climate Control Systems

Enertec Engineering

GGS Structures Inc.

WFS Ltd.

PACKAGING EQUIPMENT

Bouldin & Lawson

Global Horticultural Inc.

i2i Automation Inc

LABELPAC Inc.

Plantech Control Systems Inc.

Provide Agro

TAKS Handling Systems B.V.

WFS Ltd.

PACKAGING SUPPLIES

A-ROO Company LLC

A.M.A. Horticulture Inc.

Global Horticultural Inc.

Teris

TerraLink Horticulture Inc.

WFS Ltd.

PAINTS, GREENHOUSE

Enertec Engineering

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Kam’s Growers Supply Inc.

Langendoen Mechanical Inc.

Niagrow Systems Ltd.

Plant Products Inc.

Small Business Innovations

TerraLink Horticulture Inc.

WFS Ltd.

PANELS

Argus Control Systems Ltd.

DeCloet Greenhouse Mfg. Ltd.

Omni Structures International

Plantech Control Systems Inc.

WFS Ltd.

PEAT MOSS

A.M.A. Horticulture Inc.

ASB Greenworld Ltd.

Berger

Evergro Division, Nutrien Solutions

General Hydroponics

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hawthorne Gardening Company

Hydrogardens

Jiffy Products

JVK

Lambert Peat Moss

Plant Products Inc.

Premier Tech

RL Distributing Inc.

Scotts Canada Ltd.

Teris

TerraLink Horticulture Inc.

PERLITE

A.M.A. Horticulture Inc.

ASB Greenworld Ltd.

Berger

Evergro Division, Nutrien Solutions

General Hydroponics

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hawthorne Gardening Company

Hydrogardens

JVK

Lambert Peat Moss

Plant Products Inc.

RL Distributing Inc.

Teris

TerraLink Horticulture Inc.

PEST CONTROLS

Andermatt Canada

Crop Defenders Ltd.

Dosatron/Dilution Solutions

Evergro Division, Nutrien Solutions

General Hydroponics

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hydrogardens

Kam’s Growers Supply Inc.

Natural Insect Control

Plant Products Inc.

Teris

TerraLink Horticulture Inc.

UPL

Vetoquinol Canada

WestGrow Biological Solutions Inc.

/ The Bug Lady

Zodega

PESTICIDE APPLICATION

Dosatron/Dilution Solutions

Hawthorne Gardening Company

Hydrogardens

Plant Products Inc.

Teris

PESTICIDES

Andermatt Canada

Belchim Crop Protection Canada

BioSafe Systems

BioWorks

Dosatron/Dilution Solutions

Evergro Division, Nutrien Solutions

General Hydroponics

Global Horticultural Inc.

Hawthorne Gardening Company

Hydrogardens

JVK

Kam’s Growers Supply Inc.

Neudorff North America

Plant Products Inc.

Teris

TerraLink Horticulture Inc.

UPL

PIPE

Armtec

Enertec Engineering

Enertec Mechanical

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Langendoen Mechanical Inc.

Niagrow Systems Ltd.

Wellmaster Pipe and Supply Inc.

WFS Ltd.

PLANT

SLEEVES

A-ROO Company LLC

Bellwyck / horticolor

Global Horticultural Inc.

JVK

Teris

PLASTICS, GREENHOUSE

A-ROO Company LLC

DeCloet Greenhouse Mfg. Ltd.

Evergro Division, Nutrien Solutions

GGS Structures Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Johnny’s Selected Seeds

JVK

Omni Structures International

Roehm America LLC

Teris

TerraLink Horticulture Inc.

The HC Companies

Westland Greenhouse Solutions Inc.

WFS Ltd.

PLUG GROWING EQUIPMENT

A-ROO Company LLC

A.M.A. Horticulture Inc.

Global Horticultural Inc.

JVK

POT COVERS

A-ROO Company LLC

A.M.A. Horticulture Inc.

Bellwyck / horticolor

Global Horticultural Inc.

Hydrogardens

JVK Millenniumsoils Coir

Teris

POTS

A-ROO Company LLC

A.M.A. Horticulture Inc.

Evergro Division, Nutrien Solutions

Global Horticultural Inc.

Hawthorne Gardening Company

Hydrogardens

Jiffy Products

Johnny’s Selected Seeds

JVK

Millenniumsoils Coir

Plant Products Inc.

Teris

TerraLink Horticulture Inc.

The HC Companies

POTTING MACHINES

Bellpark Horticulture

Bouldin & Lawson

Global Horticultural Inc.

RL Distributing Inc.

PRESERVATIVES

Global Horticultural Inc.

PROPAGATION MEDIA/ SUPPLIES

A.M.A. Horticulture Inc.

ASB Greenworld Ltd.

Berger

Evergro Division, Nutrien Solutions

General Hydroponics

Groupe Horticole Ledoux Inc.

Hawthorne Gardening Company

Hydrogardens

JVK

Plant Products Inc.

Teris

TerraLink Horticulture Inc.

The HC Companies

PUMPS

Agrozone International Inc.

Dosatron/Dilution Solutions

ElectroMecaniQue

Enertec Engineering

Enertec Mechanical

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hoskin Scientific

Langendoen Mechanical Inc.

Niagrow Systems Ltd.

Southern Irrigation

Water Energy Technologies

Wellmaster Pipe and Supply Inc.

WFS Ltd.

Zwart Systems

REFRIGERATION & EQUIPMENT

Enertec Mechanical

IEM Inc.

Kooljet Refrigeration

Langendoen Mechanical Inc.

ROCKWOOL

A.M.A. Horticulture Inc.

General Hydroponics

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hawthorne Gardening Company

TerraLink Horticulture Inc.

ROOTING PRODUCTS

A.M.A. Horticulture Inc.

Andermatt Canada

EZ-GRO

General Hydroponics

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hawthorne Gardening Company

Jiffy Products

Kam’s Growers Supply Inc.

Master Plant-Prod Inc.

Teris

TerraLink Horticulture Inc.

SAFETY EQUIPMENT

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hoskin Scientific

WFS Ltd.

SEEDERS

A.M.A. Horticulture Inc.

Bouldin & Lawson

Global Horticultural Inc.

Hydrogardens

Johnny’s Selected Seeds

Teris

SHADING MATERIAL/SYSTEMS

Ceegreen

Cravo Equipment Ltd.

DeCloet Greenhouse Mfg. Ltd.

Evergro Division, Nutrien Solutions

GGS Structures Inc.

Harnois Greenhouses

JVK

Kam’s Growers Supply Inc.

Paul Boers Manufacturing /Prins Greenhousess

Teris

TerraLink Horticulture Inc.

VRE Systems

Westland Greenhouse Solutions Inc.

SHREDDERS

Hawthorne Gardening Company

RL Distributing Inc.

SOIL

A.M.A. Horticulture Inc.

ASB Greenworld Ltd.

Berger

Botanicare

Evergro Division, Nutrien Solutions

General Hydroponics

Global Horticultural Inc.

Hawthorne Gardening Company

Hydrogardens

Jiffy Products

JVK

Lambert Peat Moss

Premier Tech

Teris

TerraLink Horticulture Inc.

SOIL AMENDMENTS

A.M.A. Horticulture Inc.

Andermatt Canada

ASB Greenworld Ltd.

Berger

Botanicare

EZ-GRO

General Hydroponics

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hawthorne Gardening Company

Hydrogardens

JVK

Koppert Canada Limited

Lambert Peat Moss

Master Plant-Prod Inc.

Millenniumsoils Coir

Natural Insect Control

Plant Products Inc.

Premier Tech

Scotts Canada Ltd.

Teris

TerraLink Horticulture Inc.

SOIL MIXERS

Bellpark Horticulture

Ben Berg Farm & Industrial Equip.

Botanicare

Bouldin & Lawson

General Hydroponics

Hawthorne Gardening Company

JVK

RL Distributing Inc.

Teris

SOIL STERILIZATION

EQUIPMENT

Global Horticultural Inc.

JVK

SOIL TEST EQUIPMENT

Groupe Horticole Ledoux Inc.

Hoskin Scientific

Johnny’s Selected Seeds

JVK

TerraLink Horticulture Inc.

SOILLESS MIXES

A.M.A. Horticulture Inc.

ASB Greenworld Ltd.

Berger

Evergro Division, Nutrien Solutions

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Jiffy Products

JVK

Lambert Peat Moss

Millenniumsoils Coir

Plant Products Inc.

Scotts Canada Ltd.

TerraLink Horticulture Inc.

SPRAYING EQUIPMENT

A.M.A. Horticulture Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hawthorne Gardening Company

Hydrogardens

Plantech Control Systems Inc.

Teris

TerraLink Horticulture Inc.

WFS Ltd.

SPRINKLERS

A.M.A. Horticulture Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hydrogardens

Southern Irrigation

Teris

WFS Ltd.

Zwart Systems

STAPLING MACHINES

Global Horticultural Inc.

WFS Ltd.

STICKING MACHINES

Bellpark Horticulture

Zwart Systems

SUPPORTS, PLANT

A.M.A. Horticulture Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

JVK

Meteor Systems

Plant Products Inc.

THERMOMETERS

Enertec Engineering

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hoskin Scientific

Hydrogardens

Johnny’s Selected Seeds

Langendoen Mechanical Inc.

Maximus

Niagrow Systems Ltd.

Plant Products Inc.

Teris

TerraLink Horticulture Inc.

WFS Ltd.

THERMOSTATS

Canarm Ltd.

Climate Control Systems

ElectroMecaniQue

Enertec Engineering

Enertec Mechanical

Exacon Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hydrogardens

Langendoen Mechanical Inc.

Maximus

Niagrow Systems Ltd.

Plantech Control Systems Inc.

Teris

WFS Ltd.

TIMERS

Climate Control Systems

Enertec Engineering

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hydrogardens

Plantech Control Systems Inc.

Teris

WFS Ltd.

TOOLS

A.M.A. Horticulture Inc.

Evergro Division, Nutrien Solutions

Hydrogardens

Johnny’s Selected Seeds

Teris

TerraLink Horticulture Inc.

Wellmaster Pipe and Supply Inc.

WFS Ltd.

TRACTORS

Ben Berg Farm & Industrial Equip.

TRAILERS

Ben Berg Farm & Industrial Equip.

Bouldin & Lawson

RL Distributing Inc.

Wellmaster Pipe and Supply Inc.

TRANSPLANTING SYSTEMS

Bellpark Horticulture

Bouldin & Lawson

TRANSPORT AND SHIPPING

SYSTEMS

A-ROO Company LLC

Bellpark Horticulture

RL Distributing Inc.

TAKS Handling Systems B.V.

Wellmaster Pipe and Supply Inc.

Zwart Systems

TRAYS

A-ROO Company LLC

A.M.A. Horticulture Inc.

Global Horticultural Inc.

Hawthorne Gardening Company

Hydrogardens

Johnny’s Selected Seeds

JVK

Plant Products Inc.

Teris

TerraLink Horticulture Inc.

WFS Ltd.

TRUCK BODY AND REPAIR

TUBING

A.M.A. Horticulture Inc.

Armtec

DeCloet Greenhouse Mfg. Ltd.

Enertec Engineering

Enertec Mechanical

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hydrogardens

Langendoen Mechanical Inc.

Meteor Systems

Niagrow Systems Ltd.

Teris

Wellmaster Pipe and Supply Inc.

Westland Greenhouse Solutions Inc.

WFS Ltd.

Zwart Systems

TWINE

A.M.A. Horticulture Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Johnny’s Selected Seeds

Plant Products Inc.

TerraLink Horticulture Inc.

WFS Ltd.

VALVES

ElectroMecaniQue

Enertec Engineering

Enertec Mechanical

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hydrogardens

Langendoen Mechanical Inc.

Meteor Systems

Niagrow Systems Ltd.

Southern Irrigation

Teris

WFS Ltd.

Zwart Systems

VENTILATORS

Canarm Ltd.

ElectroMecaniQue

Exacon Inc.

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Harnois Greenhouses

Hydrogardens

Plantech Control Systems Inc.

Teris

WFS Ltd.

VERMICULITE

A.M.A. Horticulture Inc.

ASB Greenworld Ltd.

Berger

Evergro Division, Nutrien Solutions

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hydrogardens

JVK

Lambert Peat Moss

Plant Products Inc.

RL Distributing Inc..com

Teris

TerraLink Horticulture Inc.

WASHERS

Bellpark Horticulture

Bouldin & Lawson

Ogena Solutions Canada Corp.

Provide Agro

Vetoquinol Canada

WASTE RECYCLING

Agrozone International Inc.

Global Horticultural Inc.

IEM Inc.

WATER GARDENING SUPPLIES

Dosatron/Dilution Solutions

JVK

WFS Ltd.

WATER TREATMENT

PRODUCTS

Agrozone International Inc.

Armtec

BioSafe Systems

Climate Control Systems

Climatrol Solutions Ltd.

Dosatron/Dilution Solutions

Enertec Engineering

Evergro Division, Nutrien Solutions

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Hoskin Scientific

Kam’s Growers Supply Inc.

Plant Products Inc.

Priva

Provide Agro

Southern Irrigation

Vetoquinol Canada

Water Energy Technologies

WFS Ltd.

WATERING EQUIPMENT/ TOOLS

A.M.A. Horticulture Inc.

Bouldin & Lawson

Climate Control Systems

Global Horticultural Inc.

Groupe Horticole Ledoux Inc.

Johnny’s Selected Seeds

Meteor Systems

Ogena Solutions Canada Corp.

Plant Products Inc.

Southern Irrigation

Teris

WFS Ltd.

Zwart Systems

WIRE MESH

Global Horticultural Inc.

JVK

Viro Global Trade Inc.

Wellmaster Pipe and Supply Inc.

WFS Ltd.

PLANT MATERIALS

AFRICAN VIOLETS

Harster Greenhouses Inc.

JVK

AGERATUMS

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

ALSTROEMERIAS

JVK

AMARYLLIS

JVK

ANEMONES

Jelitto Perennial Seeds

ANGELONIA

Ball FloraPlant

Jolly Farmer Products Inc.

JVK

Norseco

PanAmerican Seed

Syngenta Flowers, LLC

ARALIAS

Colasanti Farms

ARGYRANTHEMUM

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

ASPARAGUS SPRENGERI

Jolly Farmer Products Inc.

JVK

Norseco

AZALEAS

Bailey Nurseries

JVK

BACOPA

Ball FloraPlant

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

BEGONIAS

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

PanAmerican Seed

Syngenta Flowers, LLC

BIDENS

Ball FloraPlant

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

BONSAI

Colasanti Farms

BOSTON FERNS

Colasanti Farms

Jolly Farmer Products Inc.

JVK

Norseco

BOUGAINVILLEAS

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

BRACHYSCOME

Ball FloraPlant

Jolly Farmer Products Inc.

JVK

Norseco

BRACTEANTHA

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

BROMELIADS

JVK

BULBS

JVK

Syngenta Flowers, LLC

CACTUS & SUCCULENTS

Colasanti Farms

Harster Greenhouses Inc.

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Palace Perennials (Sipkens Nurseries)

CALADIUMS

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

CALANDIVA

Harster Greenhouses Inc.

JVK

CALIBRACHOA

Ball FloraPlant

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

PanAmerican Seed

Syngenta Flowers, LLC

CALLAS

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

CANNAS

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

CARNATIONS

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

CEDAR

Willowbrook Nurseries

CHRYSANTHEMUMS

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

CLEMATIS

Bailey Nurseries

Jelitto Perennial Seeds

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Willowbrook Nurseries

COIR

Ceyhinz Link, Inc

Millenniumsoils Coir

COLEUS

Ball FloraPlant

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

PanAmerican Seed

Syngenta Flowers, LLC

CONTAINER STOCK

Bailey Nurseries

Willowbrook Nurseries

CRAPE MYRTLES

Bailey Nurseries

JVK

CROCOSMIAS

CROTONS

Colasanti Farms

CUCUMBERS

Jolly Farmer Products Inc.

JVK

Norseco

PanAmerican Seed

Plant Products Inc.

Syngenta Flowers, LLC

CUT FLOWERS

JVK

PanAmerican Seed

CUTTINGS, ROOTED

Bailey Nurseries

Ball FloraPlant

Ball Seed/Ball Superior-Canada

Darwin Perennials

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

CUTTINGS, UNROOTED

Ball FloraPlant

Ball Seed/Ball Superior-Canada

Darwin Perennials

JVK

Norseco

Syngenta Flowers, LLC

CYCLAMEN

Harster Greenhouses Inc.

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

DAHLIAS

Ball FloraPlant

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

DELPHINIUMS

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

DIASCIA

Ball FloraPlant

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

DIEFFENBACHIAS

Colasanti Farms

JVK

DRACAENAS

Colasanti Farms

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

EVERGREENS

Bailey Nurseries

Willowbrook Nurseries

FERNS

Harster Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

FICUS

Colasanti Farms

FOLIAGE, LINERS

Jolly Farmer Products Inc.

JVK

Norseco

FREESIAS

JVK

FUSCHIAS

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

GARDENIAS

Bailey Nurseries

JVK

GAURA

Darwin Perennials

High Q Greenhouses Inc.

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

GERANIUMS

Ball FloraPlant

High Q Greenhouses Inc.

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

GERBERAS

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

GLADIOLUS

JVK

Norseco

GLOXINIAS

Jolly Farmer Products Inc.

JVK

Norseco

GRASSES

Bailey Nurseries

High Q Greenhouses Inc.

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Norview Gardens Ltd.

Palace Perennials (Sipkens Nurseries)

PanAmerican Seed

Willowbrook Nurseries

GROUND COVER PLANTS

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

Willowbrook Nurseries

GYPSOPHILAS

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

HEDERA HELIX

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

HELICHRYSUM

High Q Greenhouses Inc.

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

HERBS

High Q Greenhouses Inc.

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

PanAmerican Seed

HIBISCUS

Bailey Nurseries

Colasanti Farms

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Willowbrook Nurseries

HOSTAS

Bailey Nurseries

Darwin Perennials

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Willowbrook Nurseries

HOYAS

JVK

HYACINTH

JVK

HYDRANGEAS

Bailey Nurseries

JVK

Norseco

Willowbrook Nurseries

IBERIS

Darwin Perennials

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

IMPATIENS

Ball FloraPlant

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

PanAmerican Seed

Syngenta Flowers, LLC

IRISES

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

IVY

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

JERUSALEM CHERRY

JVK

Norseco

JUNIPERS

Bailey Nurseries

Colasanti Farms

Willowbrook Nurseries

KALANCHOES

Harster Greenhouses Inc.

JVK

Norseco

LAMIUM

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

LANTANAS

Ball FloraPlant

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

LAVENDER

Darwin Perennials

High Q Greenhouses Inc.

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

LIATRIS

Bailey Nurseries

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

LILACS

Bailey Nurseries

LILIES

Jelitto Perennial Seeds

Palace Perennials (Sipkens Nurseries)

LINING OUT STOCK

Bailey Nurseries

LOBELIA

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

MAGNOLIAS

Bailey Nurseries

NEMESIA

Ball FloraPlant

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

NURSERY ORNAMENTALS

Bailey Nurseries

NURSERY STOCK

Bailey Nurseries

Harster Greenhouses Inc.

JVK

Willowbrook Nurseries

NYMPHAEAS

Palace Perennials (Sipkens Nurseries)

ORCHIDS

Harster Greenhouses Inc.

OSTEOSPERMUM

Ball FloraPlant

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

PanAmerican Seed

Syngenta Flowers, LLC

OXALIS

Harster Greenhouses Inc.

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

PANSIES

Darwin Perennials

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

PanAmerican Seed

Syngenta Flowers, LLC

PEONIES

Bailey Nurseries

JVK

Palace Perennials (Sipkens Nurseries)

PEPEROMIAS

Colasanti Farms

Harster Greenhouses Inc.

PERENNIALS

Bailey Nurseries

Ball Seed/Ball Superior-Canada

Darwin Perennials

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

Willowbrook Nurseries

PETUNIAS

Ball FloraPlant

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

PanAmerican Seed

Syngenta Flowers, LLC

PHILODENDRONS

Colasanti Farms

Norseco

PHLOXES

Bailey Nurseries

Darwin Perennials

High Q Greenhouses Inc.

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

Willowbrook Nurseries

PILEAS

Harster Greenhouses Inc.

Jolly Farmer Products Inc.

Norseco

PLANTS, BEDDING

Ball Seed/Ball Superior-Canada

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

PanAmerican Seed

Syngenta Flowers, LLC

Town of Drayton Valley

PLANTS, FLOWERING POT

Harster Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

PLANTS, HANGING BASKET

Colasanti Farms

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

PanAmerican Seed

Syngenta Flowers, LLC

PLANTS, OTHER

Ball Seed/Ball Superior-Canada

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

PanAmerican Seed

Syngenta Flowers, LLC

Town of Drayton Valley

PLUGS

Ball Seed/Ball Superior-Canada

Harster Greenhouses Inc.

High Q Greenhouses Inc.

Jiffy Products

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

POINSETTIAS

Harster Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

PORTULACA

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

PanAmerican Seed

Syngenta Flowers, LLC

POTHOS

Colasanti Farms

Norseco

PRIMULA

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

RHODODENDRONS

Bailey Nurseries

JVK

Willowbrook Nurseries

ROSE BUSHES

Bailey Nurseries

Willowbrook Nurseries

ROSES

Bailey Nurseries

JVK

Norseco

SANVITALIA

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

SCAEVOLA

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

SCHEFFLERAS

Colasanti Farms

SEEDLINGS, ANNUAL

Ball Seed/Ball Superior-Canada

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

SEEDLINGS, PERENNIAL

Ball Seed/Ball Superior-Canada

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

SEEDS, FLOWER

Ball Seed/Ball Superior-Canada

Jelitto Perennial Seeds

Johnny’s Selected Seeds

Jolly Farmer Products Inc.

Norseco

PanAmerican Seed

Stokes Seeds Ltd.

Syngenta Flowers, LLC

SEEDS, OTHER

Jelitto Perennial Seeds

Johnny’s Selected Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Town of Drayton Valley

SEEDS, VEGETABLE

Ball Seed/Ball Superior-Canada

Groupe Horticole Ledoux Inc.

Hydrogardens

Johnny’s Selected Seeds

Jolly Farmer Products Inc.

JVK

Norseco

PanAmerican Seed

Plant Products Inc.

Rijk Zwaan

Stokes Seeds Ltd.

Syngenta Flowers, LLC

SHRUBS

Bailey Nurseries

Willowbrook Nurseries

SNAPDRAGONS

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

SPATHIPHYLLUMS

Colasanti Farms

SPECIALTY ANNUALS

Ball Seed/Ball Superior-Canada

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

SUTERA (BACOPA)

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

TISSUE CULTURE

Harster Greenhouses Inc.

JVK

Norseco

Syngenta Flowers, LLC

TOMATOES

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

PanAmerican Seed

Plant Products Inc.

Rijk Zwaan

Syngenta Flowers, LLC

TORENIA

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

TREES

Bailey Nurseries

Harster Greenhouses Inc.

Willowbrook Nurseries

TROPICAL PLANTS

Colasanti Farms

Harster Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

TULIPS

JVK

VEGETABLE PLANTS

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

Syngenta Flowers, LLC

VEGETABLES

JVK

PanAmerican Seed

Plant Products Inc.

Rijk Zwaan

Syngenta Flowers, LLC

VERBENAS

Ball FloraPlant

High Q Greenhouses Inc.

Jelitto Perennial Seeds

Jolly Farmer Products Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

VINCAS

High Q Greenhouses Inc.

Jolly Farmer Products Inc.

JVK

Norseco

PanAmerican Seed

Syngenta Flowers, LLC

VINES

Bailey Nurseries

High Q Greenhouses Inc.

JVK

Norseco

Palace Perennials (Sipkens Nurseries)

Syngenta Flowers, LLC

Willowbrook Nurseries

WATERLILIES

Palace Perennials (Sipkens Nurseries)

WILDFLOWERS

Jelitto Perennial Seeds

JVK

Norseco

Syngenta Flowers, LLC

Willowbrook Nurseries

YUCCAS

Jelitto Perennial Seeds

JVK

Willowbrook Nurseries

CLASSIFIEDS

Rootshield PLUS WP and Granules

Designed with the same effectiveness of the previous formulation, new WP mixes more readily in water and generates little to no dust for ease of use. Mix and application rates stay the same, but should be measured by weight rather than volume. The new granular formulation is specifically developed for incorporation into soil mixes and ideal for ‘pre-charging’ bulk media. Works with soils, soilless media, and hydroponic substrates. The two actives, Trichoderma harzianum strain T-22 and Trichoderma virens strain G-41, shield against root damaging fungi, promote healthier roots and increase root mass potential. Ideal tools for managing fungicide resistance. 0-day PHI and approved for organic production. bioworksinc.com.

MycoApply SuperConcentrate10

New MycoApply SuperConcentrate10 from Mycorrhizal Applications features four species of endomycorrhizal fungi: Glomus intraradices, G. mosseae, G. etunicatum, and G. aggregatum Compatible with a broad range of crops and formulated in a high concentration, the inoculant can be added directly into the injector stock tank. The suspension can then be applied via boom spray, sprinkler, drip irrigation, hand spray, hydroseed/hydromulch, in-furrow, or methods that effectively drench the root zone, putting the propagules into direct contact with the growing roots. jvk.net

CANADA

CLASSIFIED RATES: Minimum order $75.00 or 84¢ per word, word ads must be pre-paid. CLASSIFIED DISPLAYS: $72.00 per column inch, or $5.14 per agate line. GENERAL INFORMATION: Payment must accompany order. Copy required by the 1st of the month preceding publication. All advertising copy subject to the approval of the publisher. Send order and remittance to: Classified Dept., Greenhouse Canada, P.O. Box 530, 105 Donly Dr. S., Simcoe, ON N3Y 4N5

EQUIPMENT FOR SALE

FOR

SALE:

BIOMASS FURNACE.

Decker brand – multi-fuel boiler. Model: dbb60 2005, 3.5 million btu furnace, Fuel type: corn/ pellet/coal. Comes with auto-self-cleaning blow system, 16” chimney assembly kit, 6”x20’ ash auger assembly kit and ash bowl. Includes 30-ton fuel storage silo, and silo loading auger. In excellent condition, heats 60,000 sq. Ft. Greenhouse + 7000 sq. Ft. Warehouse

Contact: Rob James 902-452-3829

Email: sackvilleagi@eastlink.ca

Location: Nova Scotia 12/1t/pd

ADVERTISERS INDEX

INSIDE VIEW

GARY JONES | Gary.Jones@kpu.ca

New superhero powers

On Wednesday morning of this week, I attended the Kansas State University, ‘Urban Food Systems Symposium 2020’. One in particular stood out, a presentation on Urban Agriculture, Climate Change, and Food Security: Potential Solutions and Synergies by Dr. Charles Rice, Soil Microbiologist, Kansas State. Fascinating, and Dr. Rice presented some wonderful graphics of recently collected data.

One question that was posed in the chat was “How can urban ag play a role in food security when costs of production are vastly higher than in rural ag or traditional industrial ag systems? Who will cover these costs?” (Sara Bernal). Another delegate offered this comment: “Detroit, Chicago, Dayton, and a few others that I cannot remember are using abandoned buildings for hydroponic farms. I’m not sure if they are solar-powered. Other places around the world are also utilizing indoor spaces to increase urban food production.” (Michelle DeHaven).

Interesting, don’t you think, that questions and comments so clearly in the domain of (our) greenhouse sector came up in a discourse focused on global atmospheric levels of CO2 and its effects on agriculture. Clearly we have a significant role to play in big picture issues.

I then nipped home to Langley, BC for a onehour workshop on how to apply one technology platform to online teaching and learning. This was very interactive, with significant attendee participation, and helped set me (and students) up for

mation on emerging diseases, and much more.”1 Having watched a couple of presentations there, I was back home from the UK in time for dinner. I’ll be dipping back for a more thorough view of the ToBRFV session, and the keynote by Prof. David Hughes, who is always worth a listen.

COVID has changed how we interact with the world.

their upcoming online, synchronous exams.

Back on the road, just after lunch, I wandered over to the British Tomato Growers’ Association (TGA) Conference, held in the UK, of course. I was unable to attend the event live (well, I could, but sorry Phil and Co., I didn’t want to get up at 2am to log in!), so was re-visiting to check out some of the presentations. According to the TGA website, “With over 400 delegates from 14 countries around the world this was a very special event that presented a range of expert speakers discussing the challenges faced by growers and their resolutions to ensure a vibrant, expanding, and sustainable, high-quality primary protected food production industry in the UK. The 2020 event discussed a diversity of subjects, market data, policy, research and innovation, important infor-

So, what’s all this got to do with the themes for this edition of G.C.? Well, it’s an understatement that Covid-19 has changed the way we do things drastically. In one day, I was able to pop into a conference in Kansas City, nip back home to BC for a workshop and a sandwich, then head on to a second national conference in the UK before being back home by 6pm. (I didn’t mention earlier, but I also popped into the Canadian Greenhouse Conference before bedtime, to listen to Silke Hemming from Wageningen talk about The Autonomous Greenhouse - Artificial Intelligence & Greenhouse Controls. Busy day.) Anyway, in so doing, I was also able to interact ‘live’ with friends and colleagues in the industry and academia and wander through digital trade stands and supplier booths chatting with a multitude of people all working to better the greenhouse industry and/or urban agriculture. The ‘National Calendar’ and ‘Buyer’s Guide’ may have changed drastically forever. Growers and suppliers have sometimes expressed the congestion of conferences and trade shows that happen at certain times of the year, and some shows have witnessed declining (or static at best) attendance levels over the past few years. But the pivot around Covid-19 means that I was able to attend 3-4 national/international conferences/symposia on opposite sides of the Atlantic in the same day. I don’t have the numbers from previous years, but I suspect that “400 delegates from 14 countries” for the British TGA Conference is pretty special for them. It seems that the digital conference platform has given me not only a new superpower of teleportation (I had no jet lag!), but I also seem to have gained powers of time travel. I wonder, has the National Calendar changed forever? Time will tell, of course. Sure, it’s ‘not the same’. But will things ever be the same again?

1 https://www.britishtomatoes.co.uk/

Gary Jones is a faculty member of the School of Horticulture at Kwantlen Polytechnic University, Langley, BC. He sits on several industry committees and welcomes comments at Gary.Jones@kpu.ca.