Far North Coast Post-Flood Weeds

Page 1

Page 1 POST-FLOOD WEEDS
ROUS
COUNCIL | WEED BIOSECURITY
FAR NORTH COAST
COUNTY

Rous County Council acknowledges the Traditional Custodians of the land upon which we work and live.

We pay our respects to the Elders of the past, present and emerging and acknowledge their continuing connection to Country who will guide us on our shared journey to the future.

Page 3 Index 04 05 06 07 13 22 29 31 User Guide Weeds after Flood About Weeds Control Methods Priority Weeds Containment Weeds Resources Ruler 08 High Risk Weeds

User Guide

Purpose:

This book has been developed to support people in the Far North Coast of NSW identify specific weeds that are more likely to spread due to mass water movement. Everybody has a Biosecurity duty. We can all play an active part in maintaining our region’s unique biodiversity.

Goals: Our goal is that our community has the skills and resources to better protect biodiversity and increase land productivity now and into the future.

How to use this book: This book is split into three sections.

First section: High Risk weeds

Weeds that are not yet present in the region, or are present in very small numbers. Urgent notification of any sighting is required.

Second section: Priority weeds

Weeds that are known to be in the area, but are present in small numbers and are targeted for early eradication. These weeds are under either Prevention or Eradication status. Both High Risk and Priority weed sightings must be reported to Rous County Council under Biosecurity Law.

Third section: Containment weeds

Widespread weeds, that are still very important to control by the landowner, however these are not notifiable weeds.

To assist you in identifying the weeds outlined in this book, you can check the size of flowers or leaves against the ruler on page 32.

Further reading: Links to additional resources can be found on page 30.

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Weeds after Flood

Flood waters can carry and introduce new weed species onto paddocks, banks and along roadsides. With the flooding that has been seen in the region recently now is the time to start to watch out for new weeds.

Monitor areas inundated by flood water for the next 12 months at least. Some weeds may not be visible until a year or two after the flood. If you find weeds and you don’t know what they are, get help with identification early before they spread further.

Weed propagules (seed or plant parts) can be readily dispersed by flood waters. For example, a weed that was seeding at the time of the floods has the potential to spread by water and be found far from its original site of growth.

Weed seeds can easily attach to vehicles and equipment in the muddy conditions after a flood. Ensure that vehicles and equipment, including those of contractors and advisors, are clean and free of weeds before entering or leaving your property.

Pasture crops may be impacted by flood - this may reduce groundcover and allow weeds to more readily grow and establish.

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About Weeds

What is a Weed?

A weed is a plant that has been introduced from another country or does not naturally occur in the area (i.e. introduced native), growing where it is unwanted or taking the place of desired plants.

What is so bad about weeds?

Every year weeds cost the Australian agricultural sector billions of dollars in lost production. They impact the price of food, human health through allergies and asthma, recreational activities, and our economy. The impact that weeds have on the natural environment is hard to measure, but it is potentially much more significant and costly. Weeds are a significant threat to our unique natural environment. They threaten the survival of hundreds of native plants and animals in NSW alone.

Do I have a legal responsibility in relation to weeds?

Yes. Under the NSW Biosecurity Act 2015, every person has a responsibility to prevent, eliminate or minimise the biosecurity risk posed by weeds. This is known as your general biosecurity duty. Plants that have been identified as posing a significant biosecurity risk in NSW or to the North Coast are known as priority weeds. There are often laws against selling priority weeds.

How do I know what a priority weed is?

The Biosecurity Act 2015 and Biosecurity Regulation 2017 list state priority weeds. The North Coast Regional Strategic Weed Management Plan lists regional priority weeds.

For the most up to date information contact your local Weed Biosecurity Officer (02) 6623 3800.

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Control Methods

Some of the weed identification pages in this booklet include symbols, shown below, indicating which control methods are optimal for that species.

Hand Removal

Suitable for plants that regrow from bulbs, tubers or other plant parts (such as runners). Hand pull or dig the seedlings.

Stem Scrape

Suitable for vines and some woody plants. Scrape one side of the stem to expose the growing layer; apply glyphosate-based herbicide immediately to the scrape.

Frill

Suitable for trees. Make horizontal cuts around the trunk to depth of growing layer and apply glyphosate-based herbicide immediately.

Stem Injection

Suitable for woody weeds and trees.

Basal Bark Spraying

Suitable for thin-barked woody weeds and undesirable trees.

Low Volume Spraying

Suitable for weeds that are less than 1m in height. Spray with a herbicide that is registered for that weed. Do not spray woody weeds, shrubs or vines over 1m in height.

Cut and Paint

Suitable for vines without aerial tubers. Cut all stems and apply glyphosate-based herbicide immediately.

Cut Stump

Suitable for woody plants. Cut the trunk and apply glyphosate-based herbicide immediately.

High Volume Spraying

Suitable for most woody weeds shrubs or vines. Spray with a herbicide that is registered for that weed.

Biological Control

Biocontrol agents are available for this weed. For more information, contact your local Council.

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High Risk Weeds

The following weeds are High Risk weeds. They are weeds that are predominantly in other areas of the state or country. If they are in the Far North Coast they are in very small numbers. They could enter our region with fodder, or the movement of machinery, water or earth.

Any sightings of the following weeds must be notified to your local Weed Biosecurity Officer. They pose significant and urgent threat to the biodiversity of our region. The following weeds are subject to Biosecurity Law, under either Prohibited or Prevention status and must not be treated or handled unless under direction by your local Weed Biosecurity Authority.

Report high risk and priority weeds rous.nsw.gov.au/report-a-weed

Page 8

Black knapweed

Black knapweed invades pastures, crops and natural areas. It outcompetes pasture plants and is not usually eaten by stock. It produces chemicals that suppress other plants and is difficult to control.

Description

Black knapweed is a slender, upright, branched perennial herb that grows to 1 m tall. It looks like a thistle but doesn’t have spines on the leaves or flowers.

Leaves

There are two types of leaves. Leaves in a clump (rosette) at the base of the plant are green, oval shaped or lobed, up to 25 cm long, soft and velvety. Leaves along the flower stem are green, about 3 cm long, stalkless and alternate along the stem.

Flowers

Flowers are 1.5 cm in diameter with pink to purple petals on the tips of stems, which thicken just below the flower surrounded by rows of scales (bracts) below the petals. The bracts are dark brown to golden brown have fine, comb-like edges and make the flowerhead look a bit like a little pine cone.

Control Method Report to local Weed Biosecurity Officer (02) 6623 3800.

REPORT HIGH RISK WEEDS NOW (02) 6623 3800
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Parthenium weed

Parthenium hysterophorus

Parthenium weed is common in central Queensland and is spreading into southern Queensland. Fodder, headers and grain harvesting machinery have previously been a source of new infestations. As a result, the weed could be found on road reserves or in paddocks.

Description

The plant usually grows 1–1.5m, although it can grow to 2m high. Seeds are small (1–2 mm across), flattened, triangular and dark brown– black with two thin, white appendages. It has a long tap root.

Leaves

Deeply lobed, pale green and covered with soft, fine hair.

Flowers

Creamy-white (4-6 mm), arranged in clusters, have five small petals and occur at the tips of the stems.

Control Method

Report to local Weed Biosecurity Officer (02) 6623 3800.

If you cannot avoid the area, wear a dust mask when near the weed. Allergic reactions are not always experienced with the first contact with the plant but can develop after a number of exposures. Parthenium weed adversely affects human health and can impact on production. It can cause: respiratory problems, severe dermatitis, tainted meat (if stock eat the plant within one month of slaughter), tainted milk.

REPORT HIGH RISK WEEDS NOW (02) 6623 3800
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Image courtesy of Phil Blackmore

Siam weed

Chromolaena odorata

Siam weed contains pyrrolizidine alkaloids which are poisonous to livestock and can cause skin problems and asthma in allergy-prone people. It has killed cattle and caused cows to abort calves. It also contains high levels of nitrates which are toxic to ruminants (e.g. sheep, goats and cattle). Siam weed is a fast growing plant that forms dense thickets.

Description

Siam weed is an upright or sprawling perennial shrub which lives for up to 10 years. 2 to 20 m tall if it climbs over other trees and shrubs. Similar looking plants are Praxelis (Praxelis clematidea), Billygoat weed (Ageratum houstonianum, A. conyzoides), Crofton weed (Ageratina adenophora).

Leaves

Diamond, teardrop or arrowhead-shaped 5–12 cm long and 3–7 cm wide. Pungent smelling when crushed. Lobed or toothed with shallow teeth on the margins, prominently veined with 3 veins near the base which look like a pitchfork, arranged in opposite pairs on the stem.

Flowers

Pale blue-lilac or pink-mauve (rarely white), 8–10 mm long and 3–4 mm wide in bunches of up to 70 at the end of branches, topped with soft threads on short stalks present from May to October.

Control Method Report to local Weed Biosecurity Officer (02) 6623 3800.

REPORT HIGH RISK WEEDS NOW (02) 6623 3800
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Images courtesy of J Brocking

Witchweeds

Striga spp.

Witchweeds are parasitic plants that take nutrients from host plants stunting or killing them, can completely destroy maize, millet, rice, sugarcane, sorghum and legume crops, are very difficult to control and usually can’t be found in time to save the crop. Parasitic weeds like witchweed are among the most destructive and difficult-to-control weeds in agriculture.

Description

They grow near the base of their host plants and can’t be seen until they emerge from the soil. This may take four to seven weeks for some witchweeds. They can flower and produce seed rapidly once they emerge. Most witchweeds are only 15-20 cm tall when fully grown, but some are up to 60 cm. Each plant can produce at least 50,000 seeds.

Leaves

Leaves are green 6–40 mm long and 1–4 mm wide (or reduced to scales for cowpea witchweed) and taper to a pointed tip.

Flowers

Flowers are attached near the top of the stem, next to a leaf, 5–8 mm wide, red, pink, white, yellow, orange or purple with four or five petals.

Fruit

Fruit capsules are about 4 mm long and 2 mm wide, green to brown as they mature with over 500 seeds.

Control Method

Report to local Weed Biosecurity Officer (02) 6623 3800.

REPORT HIGH RISK WEEDS NOW (02) 6623 3800
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Images courtesy of Biosecurity Queensland, Claire Lock

Priority Weeds

The following weeds are Priority weeds and any sightings must be notified to your local Weed Biosecurity Officer.

They are weeds that are in the area, however in very few locations. They pose significant and urgent threat to the biodiversity of our region. The following weeds are subject to Biosecurity Law, under either Prevention or Eradication status and must not be treated or handled unless under direction by your local Weed Biosecurity Authority.

rous.nsw.gov.au/report-a-weed

Page 13
Report high risk and priority weeds

Alligator weed

Alternanthera philoxeroides

Description

Alligator weed is a Weed of National Significance (WoNS) that currently has serious impacts in Australia and worldwide. This highly invasive perennial plant can grow on land or in water, and has the potential to spread and affect waterways, wetlands and floodplains throughout most of southern and eastern Australia.

Flowers

The papery white flowers are ball-shaped and sit on short stalks of 1-9 cm. The plant flowers during summer.

Leaves

The leaves are spear-shaped, dark green, and glossy. They are arranged in opposite pairs along the stems, ranging from 2-12 cm in length and 0.5-4 cm in width. The stems are hollow in the aquatic form, which aids floatation. The terrestrial plant’s stems may be a reddish colour and are not usually hollow.

Control Method Report to local Weed Biosecurity Officer (02) 6623 3800.

NOTIFIABLE WEED | CALL (02) 6623 3800
Alligator weed is both aquatic and terrestrial. Mainly found in waterways and on their banks, flood plains, or even in dry areas such as backyard gardens. Plant fragments can create new infestations when they float downstream or are moved through human activities, e.g. plant fragments spread on earthmoving machinery and boats, and in soil or turf.
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Frogbit

Frogbit clogs waterways and makes the water colder, darker and harder to reach for native plants and animals. It also reduces the number of native plants, animals, fish and birds that can live in or near a waterway. It can spread from a tiny piece into a thick, floating mat covering the whole water surface. Look for it in still or slow flowing freshwater, ponds, rivers, creeks, lakes, wetlands or dams. Note: It is illegal to sell it. The leaves can float on the water or stick up on stems when the plants are crowded together. The plants have hairy, branched roots that hang down in the water, and small, white flowers in between the leaves.

Description

Frogbit (sometimes called spongeplant) is a floating freshwater plant that spreads quickly and smothers ponds, dams, lakes, rivers and creeks.

Leaves

It has smooth, round, fleshy green leaves about 4 cm across. The top side of the leaves are glossy green and the underside looks and feels like a sponge.

Flowers

Small, white flowers can be found in between the leaves.

Control Method

Report to local Weed Biosecurity Officer (02) 6623 3800.

NOTIFIABLE WEED | CALL (02) 6623 3800
Page 15

Kidney leaf mud plantain

Description

KLMP is an aquatic plant with stalks of 2-15 cm in length. Naturalising in disturbed habitats, roadside ditches, riverbanks, streams, ponds and freshwater tidal mudflats, KLMP is a serious threat to native vegetation. Seeds can last for many years, and vegetative reproduction occurs from stem fragments.

Leaves

The leaves are a bright, glossy green and kidneyshaped; 1-4 cm long and 1-5 cm across.

Flowers

Flowers are borne in clusters (racemes). They are small, white or pale blue, with six petals.

Fruit

The fruit are small capsules containing tiny, winged seeds (less than 1 mm).

Control Method

Report to local Weed Biosecurity Officer (02) 6623 3800.

NOTIFIABLE WEED | CALL (02) 6623 3800
KLMP grows prolifically in highly disturbed, shallow, freshwater habitats. It was introduced into Australia as a pond plant, with escaped plants colonising freshwater streams, ponds and mudflats.
Page 16

Water lettuce

Pistia stratiotes

Under favourable conditions, Water lettuce will produce abundant growth, expand rapidly and form obstructive mats. These large, dense floating mats can have negative impacts on native aquatic plants and animals. They can also interfere with irrigation, boating and water sport activities. Thick mats are also known to harbour disease-causing mosquitoes. Can survive for long periods on muddy banks or in other damp locations such as roadside culverts.

Description

Free-floating, perennial aquatic plant that looks like an open head of lettuce. Reproduces vegetatively and by seed.

Leaves

Pale green leaves are ribbed, wedge-shaped and form a rosette. They are spongy to touch and have a velvety appearance due to the small thick hairs that cover them.

Flowers

Flowers are hidden in the centre of the plant, 1.5 cm long and whitish-green in colour.

Fruit Green, oval shaped berries 5-10 mm producing 4-15 seeds per berry.

Control Method Report to local Weed Biosecurity Officer (02) 6623 3800.

NOTIFIABLE WEED | CALL (02) 6623 3800
Page 17

Chinese violet

Description

A rapidly growing perennial creeper growing in sprawling mats to 1m high on its own, or up to 3m when supported by other vegetation. Plants are spread by seed and/or rhizomes.

Leaves

Leaves are oval to nearly triangular in shape, occurring on opposite pairs.

Flowers

Small white bell-shaped flowers, 20-25 mm long, with distinctive purple blotches in two parallel lines inside.

Fruit

Fruit capsules, 3 cm long and guitar-shaped, contain four flattened seeds dispersed explosively by drying capsules.

Control Method Report to local Weed Biosecurity Officer (02) 6623 3800.

NOTIFIABLE WEED | CALL (02) 6623 3800
Asystasia gangetica ssp. micrantha Chinese violet has the potential to seriously degrade Australia’s ecosystems. It can smother all vegetation in the herbaceous layer and displace native vegetation. Where it is a major weed overseas, it infests crops and competes for soil nutrients, giving it the potential to become an agricultural weed in Australia.
Page 18

Job’s tears

Description

Job’s tears are 1-2m tall grass clumps that resemble corn stalks. The upright stems are relatively thick and produce prop roots from their lower joints.

Leaves

The large leaves are 10- 50 cm long and 2-5 cm wide and alternately arranged with a stem-clasping base. These leaves are mostly hairless, but their margins may be fringed with fine hairs.

Flowers

Flowering usually commences in December, with fruit being produced through until June.

Fruit

The smooth, shiny bead-like fruit (5-15 mm long and 6-10 mm wide) usually become hard and bony as they mature. They may be white, bluishgrey, greyish-brown, yellow, orange, reddish, or blackish in colour.

Control Method

Report to local Weed Biosecurity Officer (02) 6623 3800.

NOTIFIABLE WEED | CALL (02) 6623 3800
Coix lacryma-jobi Job’s tears has been found in limited distribution around the NSW/Qld border (Kyogle and Terania). Job’s tears forms large and dense clumps along waterways. It also commonly grows in roadside ditches and other damp sites, i.e. wetlands, marshes and moist fields.
Page 19

Seeded banana

Musa spp.

Seeded banana grow in clumps in disturbed habitats, suburban yards, and in shaded sites in creek banks, forests and riparian areas. These plants can play host to the Banana Aphid, which spreads Bunchy Top disease, the most serious viral disease of bananas worldwide. Due to their unchecked dispersal methods, seeded banana plants are also a serious threat to our native vegetation. Seeds are spread by birds, possums, bats, water rats and other mammals. Can also spread vegetatively from pieces of the parent plant. When growing along a creek system, the seeds and plant material are easily spread by water.

Description

Seeded bananas look like regular (hybrid) Lady Finger (sugar) bananas. However, they are full of seeds and are not edible. To be sure, check the fruit for seeds.

Leaves

Distinguishing leaf features: leaf stem is longer than those of commercial varieties.

Flowers Bright pink to purple.

Fruit Green or pink with numerous black (peppercorn size) seeds. A bunch of bananas can contain up to 18,000 seeds.

Control Method Report to local Weed Biosecurity Officer (02) 6623 3800.

NOTIFIABLE WEED | CALL (02) 6623 3800
Page 20

Tropical soda apple

Note the difference in size and fruit.

Description

An erect shrub to 2m covered in cream coloured prickles to 12 mm long on stem and leaves.

Leaves

It has densely hairy-lobed ovate leaves (10-20 cm long and 6-15 cm wide).

Flowers

White flowers

Fruit

Immature fruit is pale green with dark green stripes. The mature fruit is yellow and approx. 2-2.5 cm in diameter. Plants can produce an average of 45,000 seeds.

Control Method Report to local Weed Biosecurity Officer (02) 6623 3800.

NOTIFIABLE WEED | CALL (02) 6623 3800
Tropical soda apple (TSA) is a native of north-eastern Argentina, southeastern Brazil, Paraguay and Uruguay. Although first identified in Australia in 2010. Subsequent surveys found infestations at Casino, Bonalbo, Wingham, Grafton, Bellingen, Coffs Harbour and Wauchope. TSA has the potential to spread in coastal regions of NSW and Qld, and inland through cattle movements. Often confused with Giant devil’s fig (Solanum chrysotrichum) page 25.
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Containment

Weeds

The following weeds are not notifiable weeds

You may see the following weeds growing on your property due to land disturbance, erosion, or flood water movement.

We encourage you to manage the following weeds, as they are invasive and impact biodiversity and land productivity. If you require information to support you in controlling these weeds on your property, please contact us on (02) 6623 3800 or email weeds@rous.nsw.gov.au.

Page 22

Cockscomb coral tree

The Cockscomb coral tree is a weed that could spread quickly in coastal areas, particularly along waterways and in wetlands. It has the potential to form dense, pure stands that can exclude native vegetation.

Description

A deciduous shrub or tree, usually 5-8m, but up to 10m high with coneshaped prickles on trunks, branches and stems.

Leaves

Three leaflets, 3-6 cm long and 2-5 cm wide.

Flowers

Conspicuous scarlet to dark red flowers in large loose clusters at the tips of branches. Flowering occurs from spring to early autumn, and this is when infestations are most obvious.

Fruit

Sickle-shaped seed pods 8-22 cm long, turning from green to dark brown or blackish as they mature. Pods contain 3-12 brown to black seeds, which are large, hard and slightly kidney-shaped.

Control Method

Cut stump, Frill, Stem Injection. THIS IS NOT A NOTIFIABLE WEED.

Page 23

Giant devil’s fig

Giant devils fig is rapidly becoming a serious threat to native vegetation and is suspected of poisoning livestock. Its sharp thorns can inflict injuries on both animals and people. A weed of watercourses (i.e. riparian areas), closed forests, forest margins, roadsides, parks, gardens, disturbed sites and waste areas.

Description

Erect perennial spreading shrub to 4m high.

Leaves

Large, deeply lobed leaves 9-35 cm long and 5-30 cm wide alternately arranged along the stem and on stalks 1.5-6 cm long.

Flowers

White flowers arranged in branched clusters, each containing up to 50 or more flowers.

Fruit

Green, globular fruit 1-1.7 cm across which turns yellow-orange as ripens and contains numerous pale yellow seeds.

Control Method

High volume spraying, Frill, Cut stump, Hand removal, Low volume spraying, Cut and paint. THIS IS NOT A NOTIFIABLE WEED.

Page 24

Green cestrum

Cestrum parqui

Infestations are usually dominant and will exclude all other plants, including natives. Often found along watercourses and in gardens and urban bushland. It also grows on fence lines, in woodlands, grasslands and along forest edges. The plant is known to be toxic to livestock and humans. Death from eating small quantities of leaves, twigs or fruit is usually rapid and painful.

Description

Medium-sized perennial shrub growing to 2-3m high.

Leaves

Shiny green leaves 2-3 cm wide and 8-10 cm long. Smooth edges, are pointed at each end and are arranged alternatively along the branch. The leaves have a foul smell when crushed.

Flowers

The flowers are greenish yellow, trumpet shaped with 5-7 small, triangular petals. Occur in clusters at the end of branches. Pungent smelling during the day, sweet smelling at night.

Fruit

Shiny, egg-shaped berries. Green when young, black when ripe.

Control Method

High volume spraying, Hand removal, Stem scrape, Low volume spraying. THIS IS NOT A NOTIFIABLE WEED.

Page 25

Groundsel bush

Baccharis halimifolia

Groundsel bush is both an environmental and a forestry weed. Thick stands can inhibit the movement of stock and reduce the productivity and carrying capacity of agricultural land. Found in disturbed areas such as coastal swamps, degraded pastures and forests.

Description

A densely-branched shrub, usually between 1.5m and 3m high, although it sometimes grows into a small tree up to 7m high.

Leaves

Groundsel bush has wedge-shaped leaves, usually with a few large teeth towards the apex, up to about 5 cm long and up to 4 cm wide on a stalk to 1.5 cm long. Leaves are dull or pale green, waxy to touch, and alternate. Stems are green at first but turn brown with age and have a characteristic striped bark.

Flowers

Numerous male and female flowers grow on separate plants.

Male flowers: cream and occur in globular heads. Female flowers: white and grow in head clusters at the ends of branches. Flower heads to 5 mm wide consist of several small flowers (florets): hair-like bristles of female florets grow to 12 mm long; hairlike bristles of male florets to 4 mm long.

Control Method

High volume spraying, Basal bark spraying, Cut stump, Low volume spraying, Hand removal. THIS IS NOT A NOTIFIABLE WEED.

Page 26

Honey locust

Honey locust spreads rapidly from seed, capable of out-competing and replacing native vegetation and forming dense monocultures. It forms dense thickets, particularly along waterways, limiting movement of stock and humans. The plants long spines can inflict injuries to humans, livestock and native wildlife and can also cause damage to vehicles and equipment.

Description

A deciduous, leguminous tree growing to 25m. Younger branches are brown and shiny, becoming greyish in colour and with a thick covering of bark as they age. Very large spines up to 18 cm long are present along the branches.

Leaves

Dark green leaves approximately 10 cm long, compound and alternately arranged along the stems. Pinnate or bipinnate with 5-16 pairs of leaflets, oval, oblong or egg shaped.

Flowers

Creamy-yellow hanging flower stalks approximately 10 cm long that develop into 20-30 cm long brown pods; each pod can contain up to 30 seeds.

Control Method

High volume spraying, Basal bark spraying, Frill, Cut stump, Hand removal, Low volume spraying.

THIS IS NOT A NOTIFIABLE WEED.

Page 27

Yellow bells

Tecoma stans

Description

Large shrub or many-branched small tree 3-8m tall. Bark is initially green and smooth, but becomes light brown to pale grey and grooved with age.

Leaves

Leaves are pinnate, arranged in pairs with 3-13 leaflets. Leaflets are narrowly egg shaped or elongated in shaped with a pointed tip and sharply toothed margins.

Flowers

Flowers are bright yellow, tubular in shape, and borne on short stalks.

Fruit

Fruit are large, elongated and somewhat flattened capsules 10-30 cm long and 5-20 mm wide. Seeds are very flat, oblong in shape and have a transparent wing at each end.

Control Method

High volume spraying, Basal bark spraying, Cut and paint, Low volume spraying. THIS IS NOT A NOTIFIABLE WEED.

Page 28
Yellow bells invades riparian areas, edges of rainforest and eucalypt forest, open woodlands, grasslands, waste areas, sand dunes, agricultural land and other disturbed areas. It has the potential to be a serious weed of much of tropical and subtropical Australia.
Resources
County Council - Weed Biosecurity
Land Services
of Primary Industries Far North Coast Priority Weeds Book https://rous.nsw.gov.au/weed-resources Follow us on Facebook and Instagram rouscountycouncil rouscountycouncil Page 29
Rous
www.rous.nsw.gov.au Local
www.lls.nsw.gov.au Department

“So glad we reported it!”

We noticed these plants covering the lake that weren’t there before...

...we called council and it turned out to be frogbit, a new weed that ruins waterways! They acted fast and our call helped save the lake!”

rous.nsw.gov.au/report-a-weed

This project is supported by North Coast Local Land Services through funding from the NSW and Australian Governments under the Disaster Recovery Funding Arrangements.

Report high risk and priority weeds
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Floods move weeds. Make your move now. Report Priority weeds now Go to www.rous.nsw.gov.au/report-a-weed Or call (02) 6623 3800 Level 4, 218-232 Molesworth Street Lismore NSW 2480 www.rous.nsw.gov.au

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