MN Arboretum Magazine Aug Sept 2021

arboretum AUGUST/SEPTEMBER 2021

magazine

CUCUMBER TREE: A MAGNOLIA FOR MINNESOTA FARM AT THE ARB HARVEST AMANITA MUSHROOMS RESCUING AN ENDANGERED CACTUS PLUS: EXHIBITS, CLASSES & OUTDOOR FUN

arboretum.umn.edu

Photo by Robert Evans Imagery

PETER C. MOE

As the summer slowly gives way to autumn, we’re enjoying

the final blooms of the season with spectacular color in the annual garden (page 4) and looking forward to the apple harvest (see adjacent sidebar for details on the AppleHouse’s seasonal opening).

We’re also anticipating a multitude of entertaining activities, including Art in the Gardens (Aug. 20-22), the return of AppleJam (Sept. 25) and the Arb Glass Pumpkin Patch (Sept. 9-12), a new Auxiliary event featuring blown glass pumpkins and glass-blowing workshops and demonstrations. Turn to pages 8-9 for highlights of the season, and flip to the calendar starting on page 13 for an overview of the classes and events we have planned for August and September.

But the Arboretum is even more than a collection of beautiful flowers and fun events, we’re also introducing new cold-hardy plants, like the SkylarkTM Hornbeam (page 12), thanks to years of research at our Horticultural Research Center, and leading conservation efforts for the endangered Escobaria vivipara cactus in southern Minnesota (page 6).

All of these efforts – from the gorgeous gardens to the cutting-edge research and plant conservation to the engaging events – are possible thanks to the support of members like you. We hope to see you in the gardens – and at the AppleHouse – soon!

AUGUST/SEPTEMBER 2021 VOL 40, NO. 4

APPLE TIME!

The opening target date for the AppleHouse "Home of the Honeycrisp" is Aug. 19th depending upon availability of apples. The AppleHouse [7485 Rolling Acres Road] is located approximately a mile west of the Arboretum entrance and sells an inventory of several varieties throughout the season. These include popular University of Minnesota introductions such as Honeycrisp, SweeTango® and First Kiss®. Also for sale will be a wide array of fall crafts and merchandise, squash, gourds, pumpkins, pies and more! Open daily from 10 a.m.-6 p.m., the Applehouse will be converted to a Holiday Boutique Nov. 1 through Dec. 20. All proceeds of the Applehouse and Holiday Boutique help support Arboretum research and operations.

Minnesota Landscape Arboretum Magazine is published six times a year by the Minnesota Landscape Arboretum Foundation, 3675 Arboretum Drive, Chaska, MN 55318-9613, 612-624-2200. The magazine is a benefit of Arboretum membership. No portion may be reprinted without permission from the Arboretum.

The information published in this magazine is not necessarily endorsed by the University of Minnesota.

The Arboretum welcomes feedback from readers at arbinfo@umn.edu.

To request a copy of this publication in alternate format, please call 612-301-1257.

The Arboretum is part of The College of Food, Agricultural and Natural Resource Sciences at the University of Minnesota.

Photo by Susie Hopper

FROM THE DIRECTOR

Patrick B. Petersen, Editor Brenda Drake Lesch, Art Director Peter C. Moe, Director, Minnesota Landscape Arboretum Alan Branhagen, Director of Operations Timothy S. Kenny, Director of Education Susan Taylor, Ph.D., Director of Development Matthew Clark, Director of Research Jenny Verner, President, Arboretum Foundation

Cover Photo by Susie Hopper

2|

A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

ALAN BRANHAGEN • DIRECTOR OF OPERATIONS

Pillsbury Shade Tree flower

Fruits coloring in early fall

tepals (not a typo: they are neither sepals nor petals) are often waxy bluish on the outside with more yellow tones present inside. Overall, the flowers look greenish, so they don’t stand out strikingly from the large green leaves.

Cucumber tree has been invaluable as one of the parent plants for all the yellow-flowering hybrid magnolias including ‘Elizabeth’ and ‘Butterflies.’

The foliage of the cucumber tree is host to the Eastern Tiger Swallowtail butterfly and Promethia moth, and the fruits are consumed by many species of wildlife including squirrels.

Consider planting a cucumber tree as a unique, and long-lived shade tree. They grow fast and have large leaves that turn golden brown in late fall. In winter, the cucumber tree’s silky terminal buds are an added standout. Young trees grow very upright and pyramidal, but as the tree ages it opens up to become a broad, wide spreading tree.

Arboretum Season of Trees Presenting Sponsor

Photos by Alan Branhagen

We tend to think of magnolias as a southern tree but the largest North American species, Cucumber Tree (Magnolia acuminata), is a magnificent deciduous shade tree fully hardy in Central on flower Magnolia Collecti Minnesota. The name describes its late summer attribute: the ripening fruits look like cucumbers sprouting from the tree in August, turning shades of pink and rose in September and bursting with brilliant scarlet seeds later in fall.

The Arboretum has several cucumber trees that are maturing into large shade trees, one in the Pillsbury Shade Tree walk, one in the Magnolia Collection and two along Three-Mile Drive before the overlook of Wood Duck Pond. Yes, these have reached (or are close to) 50 feet tall, but these trees can grow up to 100 feet tall – in fact, the former national champion was just a few miles south of the Minnesota State line in Waukon, Iowa! The local champion “heritage” tree is in Lyndale Park in Minneapolis.

Next year, around late May, stop and look for the special flowers on our trees. This is the only magnolia with yellow pigments, but the flower’s

Three-Mile Drive flower

A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

|3

ART OF HORTICULTURE

COLOR THEORY LIZ POTASEK • ARBORETUM WRITER

Colors have long provided a powerful tool for communication— both for the

feelings they invoke and the meaning they are imbued with. Cool colors are often used to soothe or calm, while warm colors are deployed to create a sense of energy or excitement. As any florist knows, flower colors can also be coded with meaning – for example, red flowers symbolize romantic love and yellow flowers indicate friendship.

Landscape gardener Duane Otto studied color theory as he put together plans for this year’s annual garden. Keeping in mind the meaning of colors, as well as the feelings they provoke, Otto played with different color combinations in each bed while laying them out to create a cohesive story. The result is a jubilant celebration of color designed to uplift and inspire.

Below you’ll find some of the combinations Otto focused on in beds throughout the annual garden and Arboretum grounds: Primary Colors Red, yellow and blue are the building blocks of the color wheel. They combine to create a striking, attention-grabbing garden.

Citrus Colors This tangy palette of yellow, orange and green offers a refreshing balance. Green provokes a sense of calm while yellow and orange add warmth and energy.

Warm Colors Red, orange and yellow hues create feelings of warmth and excitement. These three vibrant colors are analogous, meaning they appear next to each other, on the color wheel.

Pastel Colors This garden explores the soft hues of the color wheel, combining light yellow, lavender, pink and baby blue to create a muted spectrum of color.

Orange & Blue Complementary Colors There’s a reason that plenty of sports teams pick complementary colors producing high contrast. In this case, orange is a hot, vibrant color while blue is a cool, refreshing color – together they’re unstoppable.

Cool Colors Blue and violet hues tend to recede into the

background, creating a sense of space. Bright blue tends to energize the spirit while softer blues have a calming effect. Together the colors create a sense of peaceful energy.

“White” Garden Since white isn’t a color or hue, this garden might be more aptly described as the Green Garden. White blooms pop against a canvas of green in many shades. Green serves as the backdrop for the garden, but in its range of shades and textures, green has as much to offer as the beautiful white flowers.

Royal Colors Red and violet hues create a grand statement, often used by royalty. These two colors appear next to each other on the color wheel, marking a spot where warm and cool colors meet. Red is a hot color, creating drama and excitement, while violet is a cool, soothing color, which is gentle and tends to recede in the garden.

Yellow & Violet Complementary Colors Yellow and violet – opposites on the color wheel – produce a great contrast. Yellow pops with excitement, warmth and brilliance, while violet exudes a rich opulence that adds depth to the garden.

Shades, Tints and Tones of Red Various colors of red, from light pink to true red to deep burgundy complement the green foliage in this garden, which highlights the complementary colors of red and green, as well as the monochromatic beauty of red.

Photo by Don Olson

Visit the Arb soon and use these ideas in your own garden.

4|

A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

Photos by Robert Anasch; Iwona Castiello d'Antonio; Timothy Dykes

NATURE FOCUS

AMANITA MUSHROOMS:

ESSENTIAL, YET DEADLY MATT SCHUTH • NATURALIST

“There are old mushroom hunters and bold mushroom hunters, but there are no old, bold

mushroom hunters.” That is a warning to anyone who might be careless enough to eat any member of the Amanita mushroom family. Amanitas display some of the most beautiful colors and contain some of the deadliest toxins in the fungi world. At least 90 percent of fatal mushroom poisonings have been traced to Amanitas.

Amanita toxins prevent the reproduction of new cells in the body, leading to liver and kidney failure. Consuming even a tiny amount of these mushrooms can lead to death.

French researcher, Dr. Pierre Bastien developed a treatment for mushroom poisoning by using himself as the guinea pig. After he ate small bits of poisonous mushrooms, he used a combination of vitamin C, electrolytes and antibiotics, including penicillin, to cure himself. His experiment proved successful and in the process he saved a number of lives. There was another supposed cure for

amatoxin poisonings, which involved eating raw rabbit brains, believed to work because rabbits and other small rodents can survive eating the deadly mushrooms. On our mushroom walks at the Arboretum, we often see chewed remnants of mushrooms including poisonous ones – the handiwork of chipmunks, mice and other rodents.

The Destroying Angel (Amanita virosa), a tall bright white species, is considered to be the deadliest mushroom in Eastern North America and is also present at the Arboretum.

The Fly Amanita (Amanita muscaria), pictured with this story, can also show a yellow-orange cap in our region.

There is a theory that the Fly Amanita was eaten by Vikings before a battle and gave them superhuman strength but afterwards would lead to a deep sleep and possibly death. Fly Amanita has two toxins called atropine and muscarine that neutralize each other and can cause a hallucinogenic reaction. Lewis Carroll

– the author of Alice's Adventures in Wonderland (commonly shortened to Alice in Wonderland) – was known to be an experimenter of drugs, and it has been thought that the hookah-pipe-smoking caterpillar on the mushroom encouraged Alice to try some. By indulging in the mushroom Alice learned “that one side made her larger and the other side made her smaller.”

In spite of their deadly reputation, Amanitas – like all mushrooms and fungi – are essential to the health of our planet. We have identified 160 species of mushrooms at the Arboretum, which is just a small percentage of the 5,000 species in Minnesota.

Fall mushroom walks at the Arb are a favorite way for many to discover more about mushrooms.

Please come and join us. Mushroom Walks with Matt are listed at: arboretum.umn.edu/guidedwalks.aspx

A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

|5

RESEARCH

Rescuing a Cactus Takes Some Spine DAVID REMUCAL • CURATOR OF ENDANGERED PLANTS

Ball cactus (Escobaria vivipara)

Fruits and seeds

Minnesota has three species of cactus. Two of them are

species of prickly pear that Minnesota residents are more likely to run accross if they are hiking on sandy prairies, especially in the Minnesota River Valley area. The other, you are not likely to find unless you go looking for it specifically – the ball cactus (Escobaria vivipara).

This cactus, far more common in the Rocky Mountain and Great Basin regions, just reaches into the far western edge of the state for a grand total of one population in all of Minnesota. It is a cute, little cactus with a lovely bright pink flower, but without the flower, it is easy to overlook on the exposed granite outcrops it inhabits, because it is so small and the thick spines might obscure almost any green on the cactus.

The largest segments of this population are being threatened by renewed granite quarry activity. The Plant Conservation Program at the Arboretum is partnering with the U.S. Fish and Wildlife Service, The Nature Conservancy and the University of Minnesota Conservatory on a plan to bank seeds from this population and move imperiled plants to nearby protected lands. This project will use a multi-pronged approach to this population’s conservation, creating redundant backup populations and genetic banks. Cacti are not easy plants to relocate, so this redundancy is a good way we can increase our chances of success.

As part of the conservation strategy of this species, the Arb plans to introduce it to members and visitors in person, as well, likely putting plants in the Prairie Garden and the Rock Garden in 2022 or 2023. You can already see the state’s other two cactus species, prickly pear (Opuntia humifusa) and fragile prickly pear (Opuntia fragilis), behind the Snyder building and in our Prairie Garden, respectively.

6|

A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

THE NEW PLANT CONSERVATION PROGRAM VEHICLE

Photos by David Remucal

Scientist at work

Thanks to generous funding from the Wall Family Foundation, the conservation program has a new field and outreach vehicle.

This vehicle will greatly expand the reach our program will have around the state as the Arboretum works to preserve Minnesota’s native plants.

Photo by ullision at Shutterstock

LEARN AN D DO

Photo by Peyton Scott Russell

Specially designed for ages 60 and over, join inspiring instructors to explore unique creative endeavors! Enjoy the camaraderie of a small group of soon-to-be new friends as you discover and unleash your artistic energies together, transforming curiosity into new skills. Learn more and register at z.umn.edu/CreativeAging or call 612-301-1210.

Graffiti Arts 8-Week Series with Peyton Scott Russell 1-3:30 p.m., Sept. 18 – Nov. 6 (8 Saturdays) Peyton Scott Russell, internationally-known instructor and Bush Fellowship recipient, will introduce you to graffiti/street art! Learn about the history and aesthetics of graffiti as you develop your aerosol arts skills, with a ‘spray’ of inspiration from the Arboretum. Practice a variety of art-making techniques incorporating traditional art elements and design principles. $199 member/$249 non-member, for ages 60+

Japanese Textile Immersion 6-Week Series with Chiaki O’Brien 10 a.m.-1:30 p.m., March 10 - April 14, 2022 (6 Thursdays) Join award-winning instructor Chiaki O’Brien to bring out your free expression and creativity. Through a variety of textile practices rooted in Japanese practice and philosophy, together you and your peers will learn art forms, Japanese culture and embrace the notion of ‘happy accidents,’ which occur with every creative process when you ‘let go’ and let your mind soar! $199 member/$249 non-member, for ages 60+

Photo by Pam Luer

Exploring Nature through Art 6-Week Series with Pam Luer 10 a.m.-1:30 p.m., April 21 - May 26, 2022 (6 Thursdays) Create an illuminated nature journal with guidance from Pam Luer, nationally-renowned sketchbook instructor and artist. Learn to commune with nature through the arts, science and writing using a variety of drawing and observational techniques, as well as traditional horticultural field note practices.

Special guests include Arboretum horticulturists and rare collections from the Andersen Horticultural Library. $199 member/$249 non-member, for ages 60+

These activities are made possible by Minnesota voters through a grant from the Metropolitan Regional Arts Council, thanks to a legislative appropriation from the Arts and Cultural Heritage Fund.

A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

|7

Photo by Lester Hughes-Seamans

JOB AND CAREER FAIR FARM DAY

• 10 a.m. Sunday, Aug. 1, Garden for Wildlife, Tai Chi with Sue Bitney • 6 p.m. Thursday, Aug. 12, Naturalistic Garden, by Yoga 4 You • Noon Sunday, Aug. 22, Ornamental Grass Collection, by Yoga Bella • 10 a.m. Sunday, Sept. 5, Chinese Garden, Tai Chi with Sue Bitney • 6 p.m. Thursday, Sept. 16, Ornamental Grass Collection, by Spirit of the Lake • 10 a.m. Sunday, Oct. 3, Sensory Garden, with Wendy Composto Sessions are for all levels. Please bring your own mat and water bottle. The classes are always free for Arboretum members and studio partner members, and included with gate admission for non-members.

Arb.umn.edu/content/yoga-gardens

Autumn Yoga Retreat: Saturday, Sept. 18 A full day experience filled with relaxation, meditation, classes of all varieties and more! Full schedule and registration: z.umn.edu/yogaretreats

Sponsors: Presented by Friends and Family of Robert A. Christensen

Noon-4 p.m., Thursday, Sept. 9, (Public display only – no sales); Public Sale: 10 a.m.-5 p.m., Friday and Saturday, Sept. 10 & 11; 10 a.m.-4 p.m., Sunday, Sept. 12, Snyder Auditorium The Arb Auxiliary presents award-winning, professional glass artists from the Midwest and California to display and sell more than 2,000 glass pumpkins, demonstrate glass blowing and offer small class instruction. Check arb.umn.edu/auxiliary for the most up-to-date information about operating times and to secure your gate entrance. By purchasing these handcrafted pumpkins, you will support the artisans and the Arboretum. Free glass-blowing demonstrations daily. For questions call 612-625-9865.

WORLD OF PUMPKINS DISPLAY

ART IN THE GARDEN Friday-Sunday, Aug. 20-22 A unique showcase of art and nature, geared to Arboretum visitors of all ages. Find a wide variety of art displayed by talented artists who will be on hand to meet with visitors and sell their wares. z.umn.edu/artingarden

Daily, Oct. 1-31, Great Hall and Terraces Displays of popular, heirloom, unusual and international pumpkins and squash (both ornamental and edible categories) in colors ranging from white to purple, orange to green and more! z.umn.edu/WorldOfPumpkins

®

Farm at the Arb is the place to be Saturday night, Sept. 25, for the 3rd annual Arboretum AppleJam. Come and enjoy the family fun featuring great music from The Daisy Dillman Band (www.daisydillman.com), national recording artists, Minnesota Music Award winners and Minnesota Country Rock Hall of Famers. Details at applejam.umn.edu.

8|

A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

Photo by Mark MacLennan

Late summer/early fall sessions of the popular Yoga in the Gardens, held in conjunction with the sponsors listed, are scheduled on the following dates:

Photo by Karen Blenker

YOGA IN THE GARDENS AND YOGA RETREAT

9 a.m.-4 p.m., Saturday & Sunday, Aug. 14 & 15, Farm at the Arb Learn more about the growing field of agriculture and jumpstart your professional career during Cream of the Crop Day at Farm at the Arb. This job festival will promote exciting new job opportunities in developing agriculture, field crops technology and skilled training, as well as Minnesota-based opportunities in agricultural education careers. Price: Free to members and visitors. z.umn.edu/creamofthecrop

Photo by HB Roberts

SCARECROWS IN THE GARDENS

9 a.m.-4 p.m., Friday and Saturday, Sept. 24 & 25, 11 a.m.-3 p.m., Sunday, Sept. 26, Snyder Auditorium As visitors have come to expect, the Arboretum Auxiliary Fall Harvest Sale will offer up exquisite crafts. You’ll find natureinspired items including home décor, potpourri, Arboretum wood creations, knitwear for adults, children and babies, beautiful autumnal wreaths and arrangements, cards, children’s toys, and many other creative arts. All items are handcrafted by Auxiliary members and all proceeds benefit the Arboretum. Quilt raffle drawing, 2 p.m. Saturday, Sept. 25 (quilt on display in the Oswald Visitor Center). arb.umn.edu/auxiliary

Sept. 18-Oct. 31, Dahlberg Terrace and Scarecrow Hill.

The popular Scarecrows in the Gardens adds a festive note to the Arboretum’s autumn displays. Check out the artistry of the experts from Bachman’s, as well as Arboretum staff. z.umn.edu/scarecrows

Photo by Susie Hopper

AUXILIARY FALL HARVEST SALE

FRIENDS OF ANDERSEN HORTICULTURAL LIBRARY BOOK SALE 10 a.m.-4 p.m., Friday, Oct. 1 - Sunday, Oct. 3, Macmillan Auditorium www.lib.umn.edu/ahl/friendsandersen-horticultural-library

ARB FIELD FEST FARM AT THE

Photo by Susie Hopper

11 a.m.-5 p.m., Saturday, Sept. 11, Farm At The Arb This year's in-person Field Fest celebrates Minnesota farmers who bring quality products to our local and state markets. The plant-to-plate showcase will honor the contributions of animal agriculture and crop farming in Minnesota. Highlights include our first Red Barn Showcase honoring Contributions of Minnesota Animal Agriculture, Centennial Prize Drawings and Voices in the Field where visitors can meet producers in the Crop Plots. Enjoy food trucks lane, a beer garden and live farm demonstrations for all ages. Free to members and ticketed visitors. z.umn.edu/fieldfest Sponsors: Co-Presenters Friends and Family of Robert A. Christensen & MN Corn Growers Association

2021 ARBORETUM TRAVEL WITH ARBORETUM DIRECTOR EMERITUS PETER OLIN, ARBORETUM DIRECTOR PETE MOE AND DIRECTOR OF OPERATIONS ALAN BRANHAGEN

District of Gardens, DC and the Tidewater, Sept. 23 – 30. A great trip to see many of the famous gardens

and historic sites in Washington D.C. – and the surrounding towns in Virginia and Maryland. Host: Peter Olin.

Kingdom of Monarchs, Mexico, Feb. 2 – 11, 2022. A wonderful way to see the winter home of the Mon-

arch butterfly and enjoy some of Mexico's great cultural, botanical and culinary delights. As of this printing, there are a few openings – with a limit of 20 people. Host: Alan Branhagan.

Texas Hill Country, late March - early April 2022. Explore the gardens and history of Texas and see the bluebonnets in bloom in the open prairie. Host: Peter Olin.

Coastal Maine, early June, 2022. Enjoy the gardens along the coast of Maine from Portland to Bar Harbor. Host: Peter Moe.

For information on all Arboretum tours, go to z.umn.edu/ArbTravel or contact Peter Olin,olinx002@umn.edu.

A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

|9

THE JOY OF GIVING

JEFF ISEMINGER • CONTRIBUTING WRITER

If you spotted a bird with gorgeous plumage

of black and white and rose, would you be content to describe it as a “pretty bird?”

Or would you rather be able to say what it properly is – a rose-breasted grosbeak?

And if you walked under a tree with creamy yellow flowers that swathed you in an intoxicating fragrance, would you be just fine calling it a “pretty tree?” Or would you want to know, with certainty, that it’s an American basswood, aka linden?

If you’re a “namer,” especially of trees, you’re a labeling soul mate of Bart Osborn, who every year supports the Arboretum’s tree collections and, not incidentally, labeling those trees.

“I happen to love trees,” he says, “but it’s no fun if you look at a tree and don’t know what it is.”

Staff members at the Arboretum agree that their educational mission depends in part on names and labels. A well-run arboretum is like a stadium full of names, all vying for your attention and edification.

Conversely, if you see a tree without a label that you want to plant at home, what could you tell people at a nursery: It’s tall and green?

Bart has given to the Arboretum in another important way, serving as a trustee from 1998 to 2007, as did his wife, Kandi Osborn, from 2007 to 2016.

Kandi says both she and Bart have

invested their time and resources in the Arboretum because “it’s so all-encompassing – educational, open to the public and featuring a wide spectrum of what you would expect of an arboretum.”

Speaking of labels, Bart and Kandi also funded the beautiful stone Arboretum sign at the intersection of 5 and 41, which says in no uncertain terms what you’re looking at.

In fact, using the Osborns as an inspiration, here’s an edited version of this year’s theme at the Arboretum: The Season of [Labeled] Trees.

Arboretum Season of Trees Presenting Sponsor

Stone Arboretum sign at the intersection of 5 and 41

10 |

A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

HORTICULTURE

ALL YEAR LONG AT THE FARM AT THE ARB LIZ POTASEK • ARBORETUM WRITER

While we think of the late summer and early fall as “harvest time,” the farmers at Farm at the Arb actually harvested their first crop of the year on April 21 – thanks to winter low tunnel greenhouses.

The Farm at the Arb, which opened in 2019, features crop demonstrations, as well as fruit and vegetable display gardens, an orchard highlighting apples released by the University of Minnesota and a vineyard featuring University of Minnesota grape releases. The farm is also home to the Farm at the Arb Apprenticeship, a nine-month program that provides hands-on technical training in local food production for sale and community health.

Crop and fruit displays This year’s crop harvest started in July with small grains, like buckwheat, winter rye, winter wheat and oats. Bob Dressen, who plans the field plantings for Farm at the Arb, and his crew will be busy harvesting different field crops through the end of October, working on corn and soybeans in September and October.

After each field is harvested, Dressen plans to plant a cover crop that will get plowed under in late fall to help build the soil nutrients.

Next year Dressen hopes to incorporate relay planting (using a field for two different crops— an early season crop and a late season crop), as well as add new crops, such as sugar beets and field peas.

The recently planted apple orchards and vineyards are still a few years away from producing a significant harvest.

Vegetables from the Apprenticeship program In its second year, the Farm at the Arb Apprenticeship program has seven apprentices planting and tending vegetables in plots at the Arboretum, as well as five additional gardens throughout the Twin Cities.

By using winter low tunnel greenhouses and succession planting, apprentices have been harvesting crops since spring. “Continuing through the COVID pandemic restrictions, apprentices have planted, harvested and distributed produce from our youth education gardens for donation to food shelves and community meal programs,” says Tim Wilson, farm education manager. “We hope to exceed our 10,000 pounds donated in 2020.”

A limited amount of produce grown by the apprenticeship program will also be for sale at the Arboretum’s AppleHouse this fall.

Photo by Mark McLennan

GETTING READY ENJOY GARDENS ACROSS NORTH AMERICA TO TRAVEL? The Minnesota Landscape Arboretum is an American Horticultural Society partner. What does this mean for our members?

Free admission to more than 345 participating gardens throughout the United States through the Reciprocal Admissions Program (RAP).

Now that gardens continue to open up and our members are traveling, here are some tips to follow before heading to a partner garden: • We recommend that you call all gardens ahead of time before you plan your visit. Ensure that the garden is open, inquire about hours of operation, restrictions, etc.

• Present your current membership card at

MEMBERSHIP

the admissions counter or gift shop to receive the RAP benefit(s) listed for that garden.

• Each card will only admit the individual(s) whose name is listed on the card. In the case of a family, couple, or household membership card that does not list individual names, the garden must extend the benefit(s) to at least two of the members. In this case, it is at the garden’s discretion to extend benefits to more than two individuals. Some gardens may require a photo ID.

Visit ahsgardening.org/gardening-programs/ rap/ for a full list of participating gardens.

A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

| 11

THE ARBORETUM’S NEWEST PLANT INTRODUCTION STEVE MCNAMARA CURATOR OF WOODY PLANTS

Arboretum’s newest plant introduction, a Hornbeam cultivar prized for its upright form, attractive ornamental bark, and improved cold hardiness. Hornbeams belong to the genus Carpinus, which comprises more than 30 species of deciduous trees found throughout temperate regions of the northern hemisphere.

Only one, the American hornbeam (Carpinus caroliniana), is native to the United States where it has a broad range over much of the eastern half of the country, including Minnesota. It typically grows as a rounded, spreading understory tree with clean summer foliage, yellow to orange fall color, interesting

Carpinus 'Shelby' SkylarkTM

12 |

Carpinus 'Shelby' SkylarkTM lower trunk bark lantern-like fruits and smooth, gray, fluted trunk bark which accounts for one of its other common names: musclewood.

Cultivars of the European hornbeam (Carpinus betulus) have long been prized landscape trees valued for their symmetrical growth habit, attractive summer foliage and environmental adaptability, but they lack the cold tolerance of their hardiest American cousins. In SKYLARK™ HAS A 1998, former Arboretum Woody Plant RELATIVELY NARROW Breeder Harold Pellett and University of UPRIGHT FORM, A Minnesota graduate and future tree breeder at the Morton Arboretum in Lisle, Illinois, COMPACT GROWTH Susan Wiegreffe, initiated a Carpinus HABIT, AND DEEP GREEN breeding project to create new hornbeams SERRATED FOLIAGE. ITS with novel combinations of ornamental BARK DEVELOPS AN traits and environmental tolerances. One such effort hybridized our native American ATTRACTIVE FLUTED hornbeam with a popular cultivar of CHARACTER WITH AGE. European hornbeam, ‘Fastigiata,’ valued for its purportedly upright growth habit. estimated height of 25-35’ and width of 10-15’ The best seedlings from this cross were sent at maturity. Skylark ™ tolerates dry soils well to partnering nursery Heritage Seedlings and is expected to be more cold tolerant than & Liners, in Oregon, for propagation and upright selections of European hornbeam. long-term evaluation. After nearly two And, best of all, it has no known major disease decades of observation, the Arboretum or insect pest issues. selected one of the best of these trees for Skylark ™ is being introduced in partnership introduction and have named it Carpinus with the Morton Arboretum and should ‘Shelby’ Skylark ™ hornbeam. The cultivar be available for retail sale on a limited basis name was chosen as a tribute to Dr. Pellett’s beginning this year. wife, Shelby.

Skylark ™ has a relatively narrow upright Arboretum Season of Trees Presenting Sponsor form, a compact growth habit, and deep green serrated foliage. Its bark develops an attractive fluted character with age.

It is relatively slow growing with an

A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

Photos by Steve McNamara

If you’re looking for a new tree to plant, consider the

Calendar At-A-Glance Consistent with recent CDC and State of Minnesota updates, masks are no longer required on Arboretum grounds. We strongly encourage individuals who are not fully vaccinated to continue to wear masks. We will continue to be steadfast in our enhanced cleaning protocols. Thank you for your membership and support of the Arboretum.

ONGOING EXHIBITS REEDY GALLERY “Nature: Wild and Wonderful” • Through Sept. 6 “Teo Nguyen: A Reflection on Being” • Sept. 9 – Nov. 29 (See back page)

CAFE GALLERY “ART Rocks!” • Through Aug. 25 (See back page)

ANDERSEN HORTICULTURAL LIBRARY “Turning Over a New Leaf” • Through Oct. 31 In honor of trees, we'll turn over a new leaf of an old book once a week, displaying a beautiful woodcut image. While the book is from 1755 (Traité des Arbres et Arbustres [Treatise on Trees and Shrubs]), the original woodblocks are from 1563. Nineteenthcentury nurserymen's plate-books, laced together to enable turning of several colorful images of trees and fruits at once, will also be featured in each of the library's display cases and in the Great Hall.

SKYWAY GALLERY

“Celebrating Trees: 4th Annual Flora & Fauna Illustrata (FFI) Exhibition” • Through Oct. 31 The FFI, our "hundred-year project," includes these original artworks celebrating individual trees that live at the Arboretum! Use the GPS coordinates to find and compare the living tree at the Arboretum to the artist's rendition.

FOR MORE INFORMATION, VISIT:

Arboretum.umn.edu/learn.aspx CLASS REGISTRATION: 612-301-1210 EVENTS, EXHIBITS, GENERAL INFO: 612-624-2200

RECURRING AUGUSTSEPTEMBER PROGRAMS & EVENTS GROWING VEGETABLES IN MINNESOTA (ONLINE)

Available through Sept. 30, $35/$50, online self-paced module Using materials from the U of M Master Gardener Core Course, learn to plan, plant, and manage your vegetable garden successfully. Topics include soil and light needs, choosing the best vegetable varieties for Minnesota, site selection and preparation, and harvest.

GROWING FRUIT IN MINNESOTA (ONLINE)

Available through Sept. 30, $35/$50, online self-paced module Using materials from the U of M Master Gardener Core Course, learn to plan, plant and manage fruit trees, bushes, and vines. Topics include pest control, site selection, pruning, and harvest techniques for berries, grapes, apples and pears, stone fruits and more.

WEDNESDAY, AUG. 11

THE POWER OF BALANCE: STONE SCULPTURES FOR YOUR GARDEN 9-11:30 a.m., $42/$57, Oswald Visitor Center

Use shape, weight and friction to create impossible-looking balances using ordinary stones. Gain insights on photographing your creations, learn about design and composition, receive helpful tips and practice in class.

THURSDAY, AUG. 12

YOGA IN THE GARDENS

6-7 p.m., free with gate admission, Naturalistic Garden (see page 8)

FRIDAY, AUG. 13

GREAT HORNED OWL: BIRDS OF THE NORTH NEEDLE FELTING SERIES (ONLINE)

1-4 p.m., $94/$114, online via ZOOM Receive a complete kit with all materials and tools mailed directly you! Then join the live online class to receive step-by-step guidance through the process to create your own adorable woolly owl. There are enough supplies for two birds: one for practice during class and one to perfect your skills after class!

EVERY THURSDAY

SATURDAY, AUG. 14

10:30 a.m., Andersen Horticultural Library Arb.umn/edu/storytime

9-10:30 a.m., $20/$25, online via ZOOM

STORYTIME

DAILY

ONE HOUR GUIDED TRAM TOUR

10:30 a.m., noon, 1:30 p.m., 3 p.m. (no 10:30 a.m. tram on Mondays), daily through mid-Oct., $5 (purchase same-day tickets at Visitor Center) Hop aboard for a narrated tram tour highlighting our varied collections, display gardens and demonstration gardens.

BAKING & ROASTING LATE SUMMER BOUNTY (ONLINE)

Late summer farmer’s markets are overflowing with a plethora of fruits and vegetables! Follow along with Arboretum culinary instructor Ann Bercher as you learn to use robust cooking methods of baking and roasting to prepare: Roasted Fall Vegetables with Feta, Baked Vegetable Samosas and learn the secrets to “The Perfect Baked Potato.”

CREAM OF THE CROP: JOB AND CAREER FAIR FARM DAY 9 a.m.-4 p.m., Farm at the Arb

AUGUST-SEPTEMBER PROGRAMS & EVENTS

(See Page 8)

BIKE THE ARB DUATHLON

7:30 a.m. race start, $50/$65 Run 2.25 miles, Bike 7 miles, Run 2.25 miles.

SUNDAY, AUG. 1

YOGA IN THE GARDENS: TAI CHI

SUNDAY, AUG. 15

(see page 8)

9 a.m.-4 p.m., Farm at the Arb

10-11 a.m., free with gate admission, Garden for Wildlife

CREAM OF THE CROP: JOB AND CAREER FAIR FARM DAY (See Page 8)

THURSDAY, AUG. 19

APPLEHOUSE OPENS FOR SEASON 10 a.m.-6 p.m. Daily (see page 2) A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

| 13

Calendar At-A-Glance THE POWER OF BALANCE STONE SCULPTURES FOR YOUR GARDEN WEDNESDAY, AUG. 11

ART IN THE GARDEN AUG. 20-22

SATURDAY, SEPT. 11

ARB GLASS PUMPKIN PATCH

10 a.m.-5 p.m., Snyder Auditorium (see page 8)

ALL ABOUT APPLES: COOK-ALONG LIVE (ONLINE)

9-10:30 a.m., $20/$25, online via ZOOM Learn to choose the perfect apple variety for each of your recipes, and gain tips on storing apples for future use. Cook-along in real time with culinary instructor Ann Bercher (or choose to just watch) as she makes Seared Sausage with Apples & Cabbage, Winter Fruit & Apple Salad, and My Favorite Apple Pie.

FARM AT THE ARB FIELD FEST 11 a.m.-5 p.m., Farm at the Arb (see page 9)

SUNDAY, SEPT. 12 SUNDAY, SEPT. 5

(see page 8)

10-11 a.m., free with gate admission, Chinese Garden

ART IN THE GARDEN

SATURDAY, AUG. 21 ART IN THE GARDEN (see page 8)

POETREE: POETRY WORKSHOP ON THE INTERSECTION OF ART & NATURE

10 a.m.-12:30 p.m., $29/$44, Tashjian Bee & Pollinator Center Picnic Shelter

YOGA IN THE GARDENS: TAI CHI (see page 8)

Noon-1:30 p.m., $49/$95, Teaching Classroom OR online via ZOOM

Learn from a professional agricultural photographer at the Arboretum's Red Barn Farm: best ways to capture harvest time, etiquette, lighting, exposure triangle, camera settings, composition, storytelling and subjectivity through the lens.

BOOKS IN THE GARDEN: MAGICAL FACES OF AND IN NATURE

(see page 8)

THURSDAY, SEPT. 9

YOGA IN THE GARDENS

Noon-4 p.m., (Public display only – no sales), Snyder Auditorium

12-1 p.m., free with gate admission, Ornamental Grass Collection (see page 8)

THURSDAY, AUG. 26

SOCIAL HOUR WITH THE LIBRARY

4-6 p.m., $30/$45, Andersen Horticultural Library

Tree focused guided tours of the library and rare book room, guest author book signings, tree Stories/Our Noble Tree information, tree coloring pages and light refreshments. www.lib.umn.edu/ahl

ARB GLASS PUMPKIN PATCH (see page 8)

POLLINATOR PHOTOGRAPHY: BUTTERFLIES, BEES & MORE (ONLINE) 6:30-8 p.m., $25/$30, online via ZOOM

Learn techniques for capturing images of insects either perched or in flight! Gain tips on focus, composition, shutter speed and lens selection. Add in-person practicum, 9:30-11:30 a.m., Saturday, Sept. 11 for $54/$69.

FRIDAY, SEPT. 10

ARB GLASS PUMPKIN PATCH

10 a.m.-5 p.m., Snyder Auditorium (see page 8)

14 |

FARM FIELD PHOTOGRAPHY AT HARVEST TIME

2-5 p.m., $72/$87, Tashjian Bee and Pollinator Discovery Center

SUNDAY, AUG 22

ART IN THE GARDEN

(see page 8)

WEDNESDAY, SEPT. 8

Join the Arboretum book club, facilitated by Professor emerita Toni McNaron, to focus on aspects of nature about which we know less than we could/should because they reflect magical truths that can expand our understanding of our own species. Sep. 8 The Radiant Lives of Animals (Linda Hogan); Oct. 13 Entangled Life (Merlin Sheldrake); Nov. 10 Bestiary (Donika Kelly).

Explore the ways in which nature can inspire and inform your writing. Share ideas and words as you review poetry from around the world. Learn about the bones of poetry: metaphor, anaphora, and sensory detail. Explore the Arboretum’s natural areas while writing a few new poems of your own.

ARB GLASS PUMPKIN PATCH

10 a.m.-4 p.m., Snyder Auditorium

A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

TUESDAY, SEPT. 14

PHOTOSHOP FUNDAMENTALS: IMAGE BLENDING (ONLINE)

7-9 p.m., $35/$40, online via ZOOM Harness the power of Photoshop’s blending techniques to make images appear more realistic, correct blemishes or to make original graphic art. Learn to use layers and layer masks to combine images. Other classes in this Photoshop Fundamentals series include Understanding & Using the Camera Raw Tool (Sept. 16), Color Management (Sept. 28) and Portrait Magic (Sept. 30).

THURSDAY, SEPT. 16

PHOTOGRAPHING PEOPLE IN NATURE (ONLINE)

8:30-10 a.m., $25/$30, online via ZOOM Overcome the challenges of shadows, distracting elements, and poor backgrounds when working with subjects outdoors. Gain tips for working with natural light, choosing the right background and arranging people.

Add optional in-person practicum, 10 a.m.noon, Saturday, Sept. 18 for $54/$69.

Photos Left to Right: Photo Courtesy of Peter Juhl; Karen Blenker

FRIDAY, AUG. 20

FOR MORE INFORMATION, VISIT:

Arboretum.umn.edu/learn.aspx CLASS REGISTRATION: 612-301-1210 EVENTS, EXHIBITS, GENERAL INFO: 612-624-2200 AUXILIARY FALL HARVEST SALE & QUILT RAFFLE SEPT. 24-26

CREATIVE AGING FOR AGES 60+: GRAFFITI ARTS 8-WEEK SERIES 1-3:30 p.m., Saturdays Sept. 18-Nov. 6, $199/$249, Marion Andrus Learning Center

BIRDS OF THE NORTH NEEDLE FELTING SERIES - LOON FRIDAY, SEPT 24

Unleash your inner street artist. Learn about the history and aesthetics of graffiti as you develop your aerosol arts skills using a variety of art-making techniques, including your own signature tag, collage, jam walls, and even creating your own face with the help of photo projection. Discussion, evaluation, and critique enhance appreciation of this unique art form. (see page 7)

FRIDAY, SEPT. 24

LOON: BIRDS OF THE NORTH NEEDLE FELTING SERIES (ONLINE) 1-4 p.m., $94/$114, online via ZOOM

PHOTOSHOP FUNDAMENTALS: UNDERSTANDING & USING THE CAMERA RAW TOOL (ONLINE) 7-9 p.m., $35/$40, online via ZOOM

Learn the difference between global and local adjustments for color, exposure, and filters, and how to apply them using example images. Other classes in this Photoshop Fundamentals series include Image Blending (Sept. 14), Color Management (Sept. 28), and Portrait Magic (Sept. 30).

YOGA IN THE GARDENS

6-7 p.m., free with gate admission, Ornamental Grass Collection (see page 8)

FRIDAY, SEPT. 17

SPECIAL ACCESS PHOTOGRAPHY: SHOOTING THE LIGHT – DUSK TO DAWN

5-8 p.m. Fri. Sept. 17 AND 6-8 a.m.

Sat. Sept. 18, $135/$165, Tashjian Bee & Pollinator Discovery Center Picnic Shelter

Photo (Far Right) by Laura Berlage

Learn and understand the importance of light to your photography. Portions of this class take place before and after public hours - you will be the only visitors on the grounds to practice your skills with the best views at sunset and sunrise.

SATURDAY, SEPT. 18

AUTUMN YOGA RETREAT (see page 8)

SCARECROWS IN THE GARDENS OPENS

Daily through Oct. 31, Dahlberg Terrace and Scarecrow Hill.

Receive a complete kit with all materials and tools mailed directly to you! Then join the live online class to receive step-by-step guidance through the process to create your own adorable woolly loon. There are enough supplies for two birds: one for practice during class and one to perfect your skills after class!

AUXILIARY FALL HARVEST SALE (see page 9)

SATURDAY, SEPT. 25

AUXILIARY FALL HARVEST SALE (see page 9)

APPLEJAM

(see page 8)

THURSDAY, SEPT. 30

PHOTOSHOP FUNDAMENTALS: PORTRAIT MAGIC (ONLINE)

7-9 p.m., $35/$40, online via ZOOM Turn your portrait photography into treasured family heirlooms by emphasizing portrait features, correcting blemishes and lighting color imbalance. Apply adjustments to make your photos sparkle. Other classes in this Photoshop Fundamentals series include Image Blending (Sept. 14), Understanding & Using the Camera Raw Tool (Sept. 16), and Color Management (Sept. 28).

FRIDAY, OCT. 1

SUNDAY, SEPT. 26

AUXILIARY FALL HARVEST SALE

WORLD OF PUMPKINS DISPLAY OPENS DAILY THROUGH OCT. 31

TUESDAY, SEPT. 28

FRIDAY-SUNDAY, OCT. 1-3

(see page 9)

PHOTOSHOP FUNADAMENTALS: COLOR MANAGEMENT (ONLINE) 7-9 p.m., $35/$40, online via ZOOM

Create perfect color images and make them pop by applying color mixing, split toning and selective color tool techniques. Learn to correct poor lighting or the wrong color scheme on an otherwise perfect image. Other classes in this Photoshop Fundamentals series include Image Blending (Sept. 14), Understanding & Using the Camera Raw Tool (Sept. 16), and Portrait Magic (Sept. 30).

(see page 8)

FRIENDS OF THE AHL BOOKSALE (see page 9)

SATURDAY, OCT. 2

RAPTOR PHOTOGRAPHY: EXCLUSIVE CAMERA ACCESS (ONLINE + IN PERSON PRACTICUM) EXCLUSIVE CAMERA ACCESS (ONLINE + IN PERSON PRACTICUM) 10 a.m.-12:15 p.m. OR 12:45-3 p.m., $119/$139

A recorded webinar will teach you skills to control your camera for birding images from distances of 8-20 feet, as well as longer distances in the field. Then meet in-person to put your skills into practice with live raptors from the Raptor Center set amidst the Arboretum’s stunning autumn scenery.

(see page 9) A R B O R E T U M M AGA Z I N E // AU G U S T • S EP T E M B ER 2021

| 15

TELEPHONE DIRECTORY

General Information . . . . . . . . 612-624-2200 Andersen Horticultural Library. . . . . . . . . . . . . . . . . . . . . 612-301-1239 Auxiliary Membership & Events Info. . . . . . . . . . . . . . . 612-625-9865 Seasonal Alerts . . . . . . . . . . . 612-625-9791 Contributions. . . . . . . . . . . . . . . . 612-301-1266 Education. . . . . . . . . . . . . . . . . . . 612-301-1210 Gift and Garden Store . . . . . . . 612-301-7619 Facility Rentals . . . . . . . . . . . . . 612-301-7596 Membership . . . . . . . . . . . . . . . . 612-301-1257 Memorials. . . . . . . . . . . . . . . . . . 612-301-1266 Volunteering. . . . . . . . . . . . . . . 612-301-1203 Yard & Garden Help Desk. . . 612-301-7590 Website . . . . . . . . . . . . . . . arboretum.umn.edu AppleHouse Info Line . . . . . . . 612-301-3487

3675 Arboretum Drive Chaska, Minnesota 55318-9613

A publication for members and friends of the Arboretum

Due to ongoing limited operations because of COVID-19, please visit arb.umn.edu for hours and programming updates.

Paintings by Teo Ngyen

Printed with Agri Based Inks

“Like” us at facebook.com/mnarboretum • “Pin” us at pinterest.com/mnarboretum “Follow us” on Instagram at @mn_arb

The University of Minnesota is an equal opportunity educator and employer. ©2020 Minnesota Landscape Arboretum.

ART AT THE ARBORETUM

Delight in the beauty found indoors in the Oswald Visitor Center. Art is available for sale through the Gift & Garden Store, with a portion of proceeds benefiting the Arboretum.

REEDY GALLERY EXHIBITS “Nature: Wild and Wonderful” • Through Sept. 6 Be prepared for the unexpected in this nature-themed exhibition! Four renowned artists – Jackson Dainty, David Lefkowitz, Eleanor McGough and Sonja Peterson – come together with wildly different styles. Each work contains a larger narrative that entices the viewer to move in closer and discover deeper intentions.

“Teo Nguyen: A Reflection on Being” • Sept. 9 – Nov. 29 Nguyen’s exhibition features stunning large-scale photorealistic paintings that allow viewers to interact with natural beauty in an intimate setting. His works, (see images at left) some directly taken from the Arboretum landscape, capture the beauty and spirit of our natural world. Nguyen’s facility with paint reveals his subject in a wholly new way. He has a reverence for the land and states, “If I wasn’t an artist, I’d be a gardener.” Don’t miss this transformative exhibition. Nguyen’s works can be found in permanent and corporate collections, including Minneapolis Institute of Art, Walker Art Center and the Weisman Art Museum.

• Artist Opening Reception Thursday, Sept. 23

CAFE GALLERY EXHIBIT “ART Rocks!” • Through Aug. 25 This exhibit highlights two artists who spend countless hours with Minnesota rocks. Author, artist and instructor Peter Juhl not only teaches rock balancing classes but also photographs his gravity defying creations. Anne Legeros executes paintings that highlight the interplay of light and water to produce an endless variety of fascinating images.

• Visit with the artists to learn more about their inspiration and techniques:

11 a.m.-1 p.m. Saturday, Aug. 21, Cafe Gallery.

ANDERSEN HORTICULTURAL LIBRARY AND SKYWAY GALLERY EXHIBITS (see page 13)

Make the art galleries at the Arboretum part of every visit. All art is for sale through the Gift & Garden Store with proceeds going to fund the Arboretum and the local artist community! arb.umn.edu/art-galleries/reedy-gallery