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  • Upcoming Garden Events in Middle Tennessee

    March 1 – 4: Nashville Lawn & Garden Show, Fairgrounds Nashville: The annual all-indoors garden event that features live garden displays, lectures, vendors, floral designs and special programming Wine Festival featuring Tennessee wines is Saturday (March 3), noon – 5 p.m. For more information on the events and the complete lecture schedule, visit www.nashvillelawnandgardenshow.com.

    April 7: Perennial Plant Sale hosted by the Perennial Plant Society of Middle Tennessee annual Perennial Plant Sale at The Fairgrounds Nashville. Find newly released and hard-to-find perennials along with a wide range of tried and tested varieties, all from top local nurseries. The sale opens at 9 a.m. and usually sells out by early afternoon. For more information, visit www.ppsmtn.org.

    April 14: Herb & Plant Sale hosted by The Herb Society of 9 a.m. – 2 p.m., at The Fairgrounds Nashville Sports Arena building. The sale offers common and rare varieties of herbs and heirloom vegetables and handmade pottery and herb markers by artist Roy Overcast for sale. For more information and a list of available plants, visit www.herbsocietynashville.org.

    April 21: Herb & Craft Fair hosted by First Unitarian Universalist Church of Nashville, 1808 Woodmont Blvd., 9 a.m. – 3 p.m. Top quality perennial and annual herbs, heirloom tomato plants, native and companion plants, along with food and craft items reflecting an interest in the homemade and homegrown: fresh homemade sweet and yeast breads, spice mixes, barbecue sauces, jams and jellies; knitted and sewn items, homes for birds and bees, and art, jewelry and more made from pressed flowers. Visit www.thefuun.org.

    May 12: Hosta sale hosted by the Middle Tennessee Hosta. Proceeds from the sale support the club’s activities. More information about the MTHS is at www.mths-hosta.com.

    May 19: Urban Gardening Festival, hosted by Master Gardeners of Davidson County, 9 a.m. – 4 p.m. (rain or shine) at the Master Gardeners’ Demonstration Garden at Ellington Agricultural Center (5201 Marchant Drive in Nashville). The free event includes information about a variety of gardening methods and techniques, local artisans, exhibiters, growers and more. For information, visit www.mgofdc.org/ugf.

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Disappearing columbine

The columbine that I planted about three years ago usually starts coming up in March, but it hasn’t started growing this year. Could something have killed it?

Although it self-seeds, columbine is a short-lived perennial.

Although it self-seeds , columbine is a short-lived perennial.

Columbine (Aquilegia is the botanical name), with its lacy leaves and bell-shaped flowers, is a nice addition to spring gardens. It’s a relatively short-lived perennial, however, that owes any sense of longevity to a habit of prolific self-seeding. The original plant may last only two or three years. Continue reading

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Prune azaleas soon after they bloom

Our azaleas are too large and need to be trimmed. When is the best time to prune them?

AzaleaIn general, azaleas rarely need pruning, but if you find you need to reduce the size of the shrubs, the best time to prune them is right after they finish blooming. The buds for this year’s azalea blooms began forming last summer, so if you prune now, before they bloom, it means you are cutting off many of the flowers before you have a chance to enjoy them.

Southern Living garden writer Steve Bender, who edited the new edition of the Southern Living Garden Book, suggests this method for pruning azaleas: determine where the height or width needs to be reduced. Then, using hand pruners (or loppers, if the branches are thick), reach in and cut back individual branches to different lengths to create a mounding shape. Do not, he admonishes, use hedge trimmers to shear azaleas. Besides looking boxy and unnatural, this results in flowers and foliage that grow only on the outer portions of the shrubs.

Two other notes from Steve’s advice, which you can read here:

-If you do the job at the proper time, you can cut evergreen azaleas back pretty hard – even back to bare wood — and they should survive and flourish.

-If yours are the ‘Encore’ type of azaleas, which bloom in spring and again in late summer or fall, prune right after the spring bloom.

Daffodils can be early risers

It’s mid-January, and the daffodils in our yard are already starting to come up. The shoots are about 3 – 5 inches above the ground. Won’t they freeze when the temperature drops?

DaffodilsIt’s not unusual for the shoots of early-blooming daffodils to begin pushing up through the ground, even as early as January – the same time as the crocuses. Cold weather may slow their growth, but it won’t kill them. This time of year, the worst that could happen is that the weather turns warm and stays warm enough long enough that the daffodils bloom. The flowers might then succumb to a snap of extreme cold, but if buds have not begun to show color, they should be fine.

There are several daffodil cultivars that bloom in late winter, and planting those types can extend the blooming season from late winter into mid-spring. Among the early-blooming favorites are cultivars called ‘Sweetness,’ ‘Jetfire,’ ‘Barrett Browning,’ ‘February Gold,’ and others.

When shoots do begin to pop up, daffodil experts say they benefit from a light dose of bulb fertilizer, scattered lightly around each clump or spread over the surface of naturalized areas. Fertilizer can burn new leaves, so if it gets on the foliage, wash it off right away.

Callas’ beauty can be fleeting

QUESTION: My calla lilies, which are supposed to be white, are blooming, but the blooms are green! Otherwise, the plants look healthy. In fact, I’ve noticed in the past that they form seed pods. Is something wrong with them?

Calla lilyCalla lilies are lovely flowers, and easy to grow in containers or in the ground. The most common varieties produce white, yellow or pink flowers. That flower is technically the spathe, which wraps around the spadix, where the actual flowers grow. When the spathe turns green, it’s going through its natural life cycle on the way to making seeds.

Susan Bryant at Lakeside Callas in Dandridge, Tenn., explained that the spathe turns darker as it matures, and the outside of the spathe begins to turn green and to close up, with seeds forming inside.

“It starts turning green and closing up after a few days,” she said. Heat and lack of moisture might cause it to close up sooner. If you don’t watch them every day, it’s possible to miss the blooms.

You can cut the flower stalk off after it blooms, which will help the bulb grow larger. The foliage stays green and adds texture and interest to perennial beds. If you allow the seed pods to remain, let the seeds ripen and plant them in a pot indoors to grow over the winter, then put the new bulbs in the garden next summer.  It will take two years for the new plants to bloom, Bryant said. The offpspring may be a different color from the parent.

Callas prefer moist, well-drained soil and grow well in full sun, but they tolerate a bit of shade. In colder climates, the bulbs may need to be dug up and stored over the winter and replanted in spring. Gardeners in Middle Tennessee generally find that bulbs survive the winter in the ground.