Archives For Horticulture & Display Gardens

Learn more about the plants and gardens at the Chicago Botanic Garden.

Spring is my favorite time of year. As the manager of horticultural events, I have the pleasure of working with the Woman’s Board of the Chicago Horticultural Society to plan the yearly Fall Bulb Sale as part of the Fall Bulb Festival. I spend a little more than half of my year thinking about spring-blooming bulbs, and I love it.

The National Garden Bureau has declared daffodils as the 2017 flower of the year. For me daffodils reign supreme. There is a wide variety of shapes and colors to choose from—some are even fragrant—and best of all, critters do not dig them up or eat them when they are blooming.

Narcissus 'Tweety Bird'

Narcissus ‘Tweety Bird’

Daffodils are classified by the shape and size of the cup (or trumpet) and the petals. For example, Division 1 Trumpet Daffodils have a cup or trumpet that measures longer than the length of the petals. (The Royal Horticultural Society lists 13 divisions for daffodils.) This season, I am especially fond of Narcissus ‘Tweety Bird’. The flower is petite, but still has the stature and allure of the stately trumpet daffodil—with a slight twist: the petals reflex back, making it a Division 6 Cyclamineus Daffodil.

I am often asked to decipher the difference between Narcissus, daffodil, and jonquil. Narcissus refers to the botanical name for this group of flowers. “Daffodil” is the common name for this group, and “jonquil” actually refers to a specific kind of Narcissus (daffodil).

Nothing says Spring like a daffodil bouquet.

Nothing says spring like a daffodil bouquet.

Daffodils as cut flowers are a giant perk of the spring season. Generally, they have a vase life of nearly a week if harvested before the flowers are fully open. Daffodils ooze a slimy sap that is toxic to other flowers and will shorten their vase life. To avoid affecting other flowers in an arrangement, “condition” daffodils by placing freshly cut stems into cool water for two to three hours first. During that time, the stem ends will callus over and the toxic sap will stop flowing. The daffodil stems (do not recut the ends) can be added with other flowers, or you can create an arrangement using only daffodils.

Want to know more about cultivating Narcissus? Visit our daffodil page for links and tips.

The Chicago Botanic Garden has 219 daffodil varieties—a total of 521,802 bulbs—resulting in more than one million blooms during the spring season (starting in late March and lasting all the way through late May, and sometimes into early June). There are many “sweet spots” in the Garden to find your new favorite variety of daffodil. I especially love the Sensory Garden, Evening Island, and of course, the Graham Bulb Garden. I hope to see you out enjoying the daffodil vistas in the Garden.

Viewable from the Visitor Center bridge and the Crescent Garden, Bird Island is currently abloom with daffodils.

Viewable from the Visitor Center bridge and the Crescent Garden, Bird Island is currently abloom with daffodils.

Come see the 2017 Midwest Daffodil Society Show on Saturday, April 29, noon – 4:30 p.m. and Sunday, April 30, 10 a.m. – 4:30 p.m.


©2017 Chicago Botanic Garden and my.chicagobotanic.org

Fragrance is one of the benefits of a garden that is often overlooked.

Lots of thought is given to plants’ textures, colors, seasonality, sizes—all important visual characteristics without a doubt—but a garden with scents provides a deeper, richer experience by supplementing visual stimuli with olfactory. 

Fragrances, like music, often elicit memories, and so this short list of favorite fragrant plants includes a number that I experienced when I was younger. People, places, time—all are recalled with great fondness in a single whiff. 

Also among the list are a number of annuals that are perfect for containers, which allow the gardener to move plants into prominence as they reach their peak throughout the season.

Finally, I believe every garden should have a least one rose; and that it should be fragrant. Rosa ‘Mister Lincoln’, with deep velvety red petals and incredible tea rose fragrance, has stood the test of time. Both Honey Perfume™ (Rosa ‘JACarque’) and Rosa ‘Apricot Nectar’ reflect the current desire to combine fragrance with beauty and disease resistance in a hardy shrub rose. The Chicago Peace rose (Rosa ‘Chicago Peace’) earned a place at the top of our list long before we moved to Chicago with its creamy yellow flowers tinged with pink along the edges of the petals and a delicate rose fragrance. My wife would be upset if I didn’t mention her favorite, a David Austin shrub rose by the name of Evelyn (Rosa ‘AUSsaucer’), which bears delicate apricot-to-pink single-to-double quartered flowers—and a wonderful fragrance.

Rosa 'Mister Lincoln'

Rosa ‘Mister Lincoln’

Honey Perfume rose (Rosa 'JACarque')

Honey Perfume™ rose (Rosa ‘JACarque’)

Evelyn rose (Rosa 'AUSsaucer')

Evelyn rose (Rosa ‘AUSsaucer’)
Photo by Patrick Nouhailler [CC 2.0].

And now, the list:

Honeysuckles are among the most fragrant of garden plants available, but many of the most common are non-native and have begun to “jump the fence” and invade natural areas. Many of the sterile cultivars, unfortunately, are not fragrant, and the species native to the southeastern United States are not reliably hardy (Lonicera sempervirens). Fortunately Lonicera flava—also native to this region—is fragrant. Its yellow-to-orange summer blooms are followed by showy (but inedible) berries in fall.

Lonicera flava honeysuckle is a fragrant and hardy variety.

Lonicera flava honeysuckle is a fragrant and hardy variety. Photo via southeasternflora.com.

Tuberose, Polianthes tuberosa, is a nonhardy (for us) bulb from northern Mexico with an intoxicating scent so distinctive it is known simply as “tuberose.” Creamy white flowers on spikes appear from late summer up to frost. Like many fragrant plants, the scent was developed to attract night-flying pollinators and becomes more intense as late afternoon transitions to evening. Tuberose is great in a large container or can be planted in flower beds.

Hosta have long been used by gardeners to fill parts of the garden that are heavily shaded. While they all flower, ‘Royal Standard’ (among others), produces large, white intensely fragrant (in the evening) flowers in late summer.

Oncidium Sharry Baby 'Sweet Fragrance'

Oncidium Sharry Baby ‘Sweet Fragrance’

One of the featured plants from the Garden’s recent Orchid Show, Oncidium Sharry Baby ‘Sweet Fragrance’ is easily grown on a brightly lit windowsill in the home. A relatively small plant maturing at about 6 inches in height, it produces sprays of pinkish red, sweetly fragrant flowers almost year-round. It’s not overpowering.

At the end of the daffodil season, end of May to the beginning of June, a small-statured Narcissus jonquilla fills the garden with delightfully sweet scents. Relatively small in stature, the bright yellow flowers, one to three per stem, are produced above grass-like foliage. Unlike some of the larger leafed cultivars, there is rarely a need to fuss with the foliage as it dies back. Tuck it in among perennials and small shrubs.

Garden stock (Matthiola incana) is another one of those plant groups that for a while, featured size, shape, and color of the flowers at the expense of fragrance. Fortunately the pendulum has swung back and a number of modern cultivars feature fragrance in addition to some really cool colors.

Prairifire crabapple (Malus 'Prairifire')

Prairifire crabapple (Malus ‘Prairifire’)

Crabapples bloom here at the Garden, reliably on Mother’s Day, and their fragrance is another one so distinctive as to be given its own name. Malus ‘Prairifire’ is not only fragrant, but is smaller in size—perfectly suited for modern gardens. It features white to pink flowers and showy red fruit in fall.

Paeonia 'Festiva Maxima'

Paeonia ‘Festiva Maxima’

The herbaceous peony Festiva Maxima is an old cultivar but its fragrance has earned it a spot in the moving van during every move. White flowers flecked with red have that wonderful peony fragrance. It needs staking and if planted in a crowded location, is susceptible to powdery mildew. Recipes online provide instructions on using the petals to make peony-scented jelly—a very delicate, flavored sweet with a light pink color. Small nectar glands on the sides of the flower buds attract small ants to the plants. The ants don’t pollinate the flowers, but they are important to the dispersal of the seeds later in the year. The seeds feature an elaiosome (fleshy appendage) that the ants strip off and feed upon once they have hauled the seed to their nest—insuring the dispersal of peony seeds. The nectar is simply there to make sure they are around when the seeds are ripe.

Phlox paniculata 'David'

Phlox paniculata ‘David’

Many of the garden phlox, Phlox paniculata, feature a vanilla clove fragrance in mid-summer. The cultivar ‘David’ features pure white flowers on disease-resistant foliage. I let it reseed in the garden, and the results are spectacular—the offspring feature light to dark lavender flowers surrounding the white parent.

Nicotiana alata 'Perfume Deep Purple'

Nicotiana alata ‘Perfume Deep Purple’

Fragrant tobacco, Nicotiana alata, produces tall spikes of sweetly scented long, tubular white flowers throughout the summer. I let mine reseed underneath the dryer vent, ensuring a return the following year. This plant is great in containers or used as an in-ground annual.

Clove currant (Ribes odoratum) is an underutilized medium-sized shrub with bright yellow flowers with, you guessed it, the scent of cloves. This is a great plant as a mounded specimen or can be utilized as a hedge.

Butterfly bushes are another of the “must have” sweetly scented garden plants. Like others on this list, the cultivars I grew up with have developed a bad habit of “jumping the fence” and invading natural areas. Plant breeders have risen to the challenge and produced a number of sterile hybrids. Lo & Behold Blue Chip is smaller in stature with lavender-to-blue flowers with the classic fragrance. Asian Moon is a larger growing cultivar with deep purple petals surrounding the orange throat and a rich, sweet fragrance.

Pineapple sage, Salvia elegans, is a classic selection for a “brush against” plant for a location near a walkway or door. Dill, parsley, basil, thyme, rosemary, scented geraniums, and many other herbs can be selected to add their notes to the garden, depending on the gardener’s tastes.

Heliotrope arborescens

Heliotropium arborescens

Heliotrope, Heliotropium arborescens, rounds out the favorites list. Deep purple flower clusters add a wonderfully sweet scent to the landscape and work out well in containers or in-ground locations.


©2017 Chicago Botanic Garden and my.chicagobotanic.org

What is old is new again.

The dinosaur of the plant kingdom, a Wollemia pine tree (Wollemia nobilis), has surprised horticulturists at the Chicago Botanic Garden with a burst of promising male and female cones this winter.

In Glencoe, the sole tree spends its winters in the carefully controlled environment of the production greenhouse. In the wild, its relatives are clinging to life on remote sandstone gorges in the Blue Mountains of Australia.

“It is probably the most watched plant in the Garden right now,” said Boyce Tankersley, director of living plant documentation. Little is known about the prehistoric species that is part of a genus dating back 65 million years. The Garden’s specimen is a youthful 8 years old, and is just beginning to show off its unusual characteristics.

“In this case, there is such little information in the literature,” noted Tankersley, who was amazed to see both male and female cones emerging from the tree’s branches earlier this year. “We don’t know enough about this plant to know if it is going to set seed…but at least it is producing cones, which will allow us to try some experiments,” he said. The tree has grown male cones in recent years, but this is the first year it has produced any female cones.

PHOTO: Wollemia nobilis female cone.

Wollemia nobilis female cone

PHOTO: Wollemia nobilis male cone.

Wollemia nobilis male cone

Scientists do know that the species that has managed to survive the test of time possesses some unusual adaptations. It can generate new seedlings by dropping specific branches that take root, or it can exchange pollen from male to female cones to generate seed.  

At the Garden, scientists plan to pollinate the tree when the time is right. They will use pollen from the tree itself, and if available, pollen from a tree at another botanic garden. They will also reserve pollen for a potential future exchange.

PHOTO: Wollemia nobilis in the Heritage Garden in summer.

Find Wollemia nobilis in the Heritage Garden in the summer months.

Trees in the wild population are believed to be closely related to one another. As a result, any seeds they produce have a low level of viability. Only 6 percent or fewer go on to become healthy, mature trees. The species is listed as critically endangered. The urgency to save the pines is accelerated by changes in climate. Their mountain home is experiencing increasingly hotter and drier weather than ever before.

According to Tankersley, there is hope that more diversity may be found within the propagated plants, and that their offspring could lead to a stronger future for the species. However, scientists are only mildly optimistic. “In a world where there is so much that we can’t do anything about, it’s good to have something where you can participate in efforts to keep something from going extinct,” he said. “This plant is not gone; there’s something we might be able to do to help it out.” In addition, the plant may inform the research of paleobotanists who rarely have the opportunity to see a live plant with such historic roots to compare against the fossil record. “In a scientific way, we’ve been looking at the earth in a relatively short period of time,” added Tankersley. “When we find something like this that is very uncommon, everything about it is unknown…it’s sort of a miniature warehouse that we don’t want to lose because in the future, it may be more important than a mere botanical curiosity.”

The horticultural team also takes the cone production as validation that they are meeting the plant’s very particular growing requirements.

The Garden’s Wollemia pine spends its summers in the Australia bed of the Heritage Garden. Tankersley anticipates that it will be back on display this June.

As for the voyage of discovery with this extraordinary plant, he says, it is to be continued…


©2017 Chicago Botanic Garden and my.chicagobotanic.org

The late February weather in Chicago has been a glorious time to be outside and work in the garden. But the unseasonably warm weather has also raised questions about the long-term effect on plants and what garden tasks are appropriate.

It is best to hold off on doing any detailed clean up of garden beds as the mulch and leaves in the beds will provide some protection to any early growing perennials when the weather eventually turns cold again. Raking leaves off the lawn and cutting back perennials are all fine to do now providing your garden soil is not too wet.

Snowdrops are blooming at the Garden.

Early flowering bulbs like snowdrops that are in flower here at the Chicago Botanic Garden are very tolerant of the cold. Daffodil and tulip foliage is coming up; these might end up being damaged by a spell of cold weather, but this should not affect the spring flowers. You do not need to take any special maintenance steps to protect these plants.

If you have some perennials that are growing in a warm area of the garden with more pronounced growth, they might benefit from a light layer of mulch. For the most part, though, there is nothing special for most gardeners to do in their perennial beds.

This is great weather to prune but proceed with care. Spring flowering shrubs like viburnums, lilacs, and forsythia set their flower buds last year so pruning done at this time of year will remove flower buds and reduce the number of spring flowers. You can still prune—just be aware of the flower buds as you are pruning. Forsythia flowers along the stems while viburnums will have a flower bud at the ends of the stem.

The dormant season, and in particular late winter, is the best time of year to complete rejuvenation pruning, which is the aggressive pruning of overgrown shrubs to bring them back into scale with the garden. Shrubs like hydrangea (except oak leaf hydrangea), potentilla, and spirea that flower on new wood respond well to pruning now too. For instance, I cut my Annabelle hydrangea back to the ground each spring.

Any plants installed last summer or fall should have been mulched when they were planted. If they were not, then mulch them now to help mitigate the temperature swings in the soil and prevent frost heaving of any plants in spring. The freezing and thawing of the soil can push recently installed small plants such as 1-gallon perennials or ground covers that were grown in containers out of the soil as the weather transitions to spring.

If we receive a good covering of snow, the snow itself will not harm plants unless it builds up on them and breaks branches. It is a good idea to brush plants off during a storm if you observe them getting weighted down. Later snowstorms are more likely to come in wet and heavy. Leave the plants alone if the snow has frozen on them to avoid breaking branches during the removal process.

Enjoy the warm weather and the early blooms, both at the Chicago Botanic Garden and in your own backyard.

Demystifying Seed Catalogs

Get seed catalog savvy

Lisa Hilgenberg —  February 16, 2017 — 6 Comments

The arrival of seed catalogs in mailboxes ranks as one of the most hopeful times in a gardener’s year, as it provides us with a welcome link to spring.

February is the perfect time to plan next spring’s vegetable garden. One of the first considerations is deciding what to grow. This can be answered by simply listing the veggies or asking your family to name the veggies they like to eat. There are a few other considerations before placing your order for next year’s garden—such as deciding if you should plant seeds or transplant vegetable starts. Seeds of many vegetables can be sown directly in the garden, including root vegetables like carrots, radish, and beets. Peas, beans, and squash are also best directly sown. Cabbage, tomatoes, and peppers are better given a head start inside first, and then transplanted into the garden as small plants, because they need a long, warm growing season.

Brassica oleracea 'Blue Wind' broccoli

For spring plantings, set broccoli transplants out two to three weeks before the last spring frost date.

PHOTO: Planter potted up with edible greens.

Edible spring planters can be harvested and repotted with next season’s veg.

Timing is important in the vegetable garden, and knowing that our growing season has approximately 170 frost-free days helps guide decisions on which plants to plant and when to plant. Our risk of frost is generally from October 15 through April 27, but can vary two weeks in either direction. Understanding that vegetable varieties have varying tolerances to frost helps you plan your planting calendar. For example, those very hardy plants like collards, kohlrabi, kale, spring onions, pea, spinach, turnip, and cabbage can be planted out four to six weeks before our last frost date. Those called “half hardy” or “frost tolerant”—such as beets, Swiss chard, carrots, cauliflower, and mustard—must be planted a bit later; two to three weeks before the last frost date.

The best seed catalogs will help decipher a gardener’s questions, and help plot, measure, and sort out the seed math needed to get started on a vegetable garden. Most seed is available in organic and non-organic options, with the latter usually the least expensive. Good catalogs provide keys to help decipher the icons (vegetable resistance codes) in plant descriptions. After all, a seed company’s success is based on a gardener’s success with their products.

As our nutritional consciousness rises, the taste and the health benefits of growing your own organic produce is a pursuit worthy of winter afternoons spent planning.  

Here are a few of my favorite seed companies:
(Consider going paperless; all of these catalogs are available online.)

Johnny’s Selected Seed
www.Johnnyseeds.com (877) 564-6697

Johnny’s Selected Seed is a 43-year-old, employee-owned company in Maine, recognizing that “good food is the basis of our well-being.” Widely used by home gardeners and small market farmers, the seed selection includes hundreds of vegetable, flower, and herb varieties in organic and non-organic (options) seeds. The catalog provides grower’s information for the novice to advanced gardener—it’s a virtual garden education. Johnny’s provides well-tested tools for garden tasks from bed prep to trellising, to season extension, and cover cropping. Comparison charts like the one on leaf lettuce help gardeners select seeds based on their specific growing conditions. Charts and photos compare length, width of mature veggies, and harvest windows.

High Mowing seed catalogHigh Mowing Organic Seeds
www.highmowingseeds.com (866) 735-4454

High Mowing Organic Seeds simply provides 100 percent certified organic, non-GMO Project Verified vegetable and flower seed to organic growers. The helpful seed catalog key on page two of the new 2017 catalog includes a tutorial on how to read the individual variety descriptions that follow. Seed definitions of open pollinated (OP), heirloom, and hybrid seeds are aptly explained and marked throughout. Crop types are headed by general cultural information or the “how to” grow beans for example. Then each listing is complete with the days to maturity (based on conditions in Vermont where HMO is located), disease resistance and any special attributes of the plant including breeder credit. Don’t miss the invaluable planting chart on the last page. High Mowing Organic Seeds is an excellent resource for passionate organic growers.

The Cook’s Garden
www.cooksgarden.com (800) 457-9703

Burpee acquired The Cook’s Garden more than ten years ago, and it has helped nurture America’s love affair with healthy, delicious food by offering the best gourmet veggies, greens, and herbs from around the world. The catalog offers seeds and plants for gourmet gardeners, with vegetables and fruits often pictured in recipes alongside culinary tips. Offering well-curated collections of helpful horticultural gadgets, you’ll find ash-handled tools, trellising supplies, rain gauges, and garden hods (flat, wood-handled basket) to make harvesting a snap. The Cook’s Garden catalog offers a wide range of quality products to indulge your inner gardener-chef when produce arrives in the kitchen. They’ve got canning, preserving, and dehydrating supplies covered. If the ultimate luxury is having the right tool for the job, check out the herb snips, the strawberry huller, and my current obsession, the new pickle slicer.

Seed Savers Exchange
www.seedsavers.org (563) 382-5990

Seed Savers Exchange helped start the heirloom seed movement by locating and preserving almost 20,000 varieties by growing them and seed banking at Heritage Farm in Decorah, Iowa. The not-for-profit’s mission is to conserve and protect America’s culturally diverse but endangered food crop heritage for future generations by collecting, growing, and sharing open pollinated seeds and plants. The catalog contains an anthology of stories and fascinating anecdotes connecting the reader to plant history, and has a comprehensive roster of vegetable seed many of which are certified organic. Be sure to check out the heirloom flower seed, garlic, and seed potatoes. It’s a great resource for seed saving supplies and helpful guides to get started planting and seed saving.

Pinetree Garden Seeds catalogPinetree Garden Seeds and Accessories
www.superseeds.com (207) 926-3400

Pinetree has been a year-round source for the home gardener for more than three decades. Their product lines go well beyond a fairly complete line of gardening gear, including soil kits and amendments, and animal deterrents. Also offered are natural bath and hair products, kitchen gadgets (I want the tortilla press), and bee, bat, and bird products. If you’d like fragrant oils and herbal teas to go along with your vegetable seeds, look no further than Pinetree. There is a comprehensive compendium of some of the best gardening books that I’ve seen.

Baker Creek Heirloom Seeds
www.rareseed.com Fax: (417) 924-8887

Baker Creek offers 1,800 vegetable, flower and herb varieties claimed to be the largest in our country.  A focus on preservation, it not surprising they have one of the largest selections of seeds from the nineteenth century. The fittingly named Rare Seed Catalog is like the Vogue magazine of the vegetable world. It wins the prize for the most beautiful photographs of the most avant-garde produce collection, complete with nutritional factoids and culinary inspiration. Stories from seed collecting expeditions around the world—recently Thailand, Myanmar, and India—are in the Heirloom Gardener, an associated and nationally distributed magazine written as a tool to not only promote and preserve our rich agricultural history but as explanation of why we need to care about it. The Rare Seed Catalog provides a selection of 78 varieties of melon and 20 types of okra. Baker Creek has a limited but diverse availability of live plants to ship. If goji berries, ginger root, and dragon fruit tickle your fancy (and you either live in the subtropics or have a greenhouse available) look no further, they’re in the Rare Seed Catalog. Baker Creek encourages political activism, and the catalog is written with an underlying ripple that we’re reaching the tipping point in the struggle against GMOs.


Specialty catalogs

Vermont Bean Seed Company
www.vermontbean.com
Bush or pole? Round, broad, or flat-podded? Shellers or runners? Golden, purple, filet, or lima—Vermont Bean Seed Company’s catalog for home gardens has them all. 

Filaree Garlic Farm
www.filareefarm.com
Garlic immersion is made possible by paging through the Filaree Garlic Farm catalog. A certified organic garlic grower in Washington State, Filaree encourages placing early orders of favorite rocaboles, porcelains, and purple stripe garlic.

Totally Tomatoes
www.totallytomato.com
Whether you are growing tried-and-true tomato varieties or venturing on to new releases and heirlooms, Totally Tomatoes offers hundreds of tomato varieties to the avid tomato grower. Categorized by size, shape, and color, Totally Tomatoes is a veritable rainbow for the tomato connoisseur. Focusing on Solanaceous crops, dozens of pepper varieties are included, too. 

PHOTO: A basket of garlic, with each bulb labeled with its cultivar name.

Try growing different garlic varieties to find the flavor you like best.


Varieties/cultivars and tips for direct seeding into spring gardens

It’s hard to resist a list of a few of my favorite varieties to directly sow into the spring garden. Knowing how much seed will sow a 10-foot row and the days to maturity (when the harvest can be expected) is the type of garden math that tangles up many a gardener, but quality catalogs will provide vegetable grower’s guides to help to sort out how much seed you’ll need. 

Radish: Direct-sow spring radish as soon as the ground can be worked, or four to six weeks before the last frost. Radish is best grown quickly in cool, damp conditions. It’s easy to grow, and requires only 28 days from planting to harvest. Try these spring radish cultivars: ‘Early Scarlet Globe’, ‘Rudolf’, and ‘Crunchy Royale’.

PHOTO: Beets.Beets: Nothing says spring like tender, freshly harvested baby beets. Sow about two weeks before our last frost date and thin to 3 inches between seedlings. Fertilize with liquid seaweed. Beets have great culinary versatility, so plant a combination of gold and red. ‘Detroit Dark Red’, ‘Bull’s Blood’, and ‘Burpee’s Golden’ are great choices.

Swiss chard: We love ‘Rhubarb’ and ‘Five colored Silverbeet’. These greens can grow through the entire gardening season. By harvesting just the outer leaves with a harvest knife, the plant stays in place and the integrity of your design stays intact.

PHOTO: Carrots.Carrots: The sweetest, juiciest, and most flavorful carrots are the French heirlooms. Sow two weeks before the last frost date. Carrot is slow to germinate, so have patience. Our favorite varieties for Chicago growers: ‘St. Valery’, ‘Paris Market’, and ‘Scarlet Nantes’.

Spinach: One of the earliest-germinating cool season vegetables, spinach can be direct sown in 2-inch bands or rows four to six weeks before the last frost. Plant ‘Corvair’, ‘Tyee’, or ‘Donkey’ for the most reliable spring crops.

Lettuce: We love ‘Tennis Ball’, ‘Black Seeded Simpson’, ‘Rouge d ’Hiver’, and ‘Winter Density’. One gram of seed will sow a 15-foot row.

Spring greens: Try mache, arugula, or mizuna; 30 to 50 seeds will seed one foot of row when sown as a cut-and-come-again salad mix.


©2017 Chicago Botanic Garden and my.chicagobotanic.org