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  • May garden tips & tasks

    GARDEN EVENTS IN MIDDLE TENNESSEE

    May 20: Master Gardeners of Davidson County Urban Gardening Festival, 9 a.m. - 4 p.m., Ellington Agricultural Center Demonstration Garden. Free admission. www.mgofdc.org; on Facebook at www.facebook.com/mgofdc.

    June 10: Middle Tennessee Daylily Society show and sale, Ellington Agricultural Center’s Ed Jones Auditorium, 440 Hogan Rd. in Nashville. Sale open at 10 a.m.; show opens to the public at 1 p.m. To learn more about the Middle Tennessee Daylily Society, visit www.middletndaylilysociety.org.

    It’s time to plant those tender herbs and vegetable transplants, such as basil, dill, tomatoes, green peppers, hot peppers, eggplant.

    If tomato transplants are already too tall and leggy, you can plant them on their sides and cover the long stems with soil. The stem tips will turn upward, and the buried stems will sprout roots.

    Sow seeds of bush beans and pole beans, cucumbers, sweet corn, melons, okra, field peas, pumpkin, squash and zucchini. Follow the directions on the seed package for planting depth and spacing. Vegetables grow best in full sun.

    Cut the faded blossoms of peonies. Fertilize the plants lightly in late spring or early summer.

    Remember the basics of watering: morning is best, so plants’ leaves have time to dry before evening. Lawns, perennial borders and annuals like to have 1 – 1½ inches of water per week.

    Many indoor plants enjoy a summer vacation outdoors. Give them a cool, shady spot in the yard, and don’t forget to water them.

    Prune thyme frequently so it will stay full and green in the center.

    Weeding is easiest after a rain. If the ground is too dry and you need to weed, soak the bed first with a hose or sprinkler.

    Whether they’re growing in the ground or in pots on the porch, pinch the tips of geraniums from time to time to encourage them to branch out and to produce more flowers. Geraniums in pots benefit from regular feeding with a water-soluble fertilizer.

    Remember that mulch can be a gardener’s best friend. Pine straw or composted leaves are good alternatives to hardwood mulch.

    Harvest herbs as they reach their peak. Dry small leaves on a screen, hang small bunches of long-stemmed herbs in a warm, dry room out of the sunlight.

    Plants growing outdoors in containers dry out quickly when it’s hot. Check them daily, and water as needed.

    Don’t go near hydrangeas with the pruning shears unless all you’re cutting is dead branches. If the bigleaf hydrangeas look like they’re not going to bloom, it could be that the buds were nipped in a late cold snap, or the plant was pruned too late last year.

    As the flowers of Shasta daisies begin to open and then to fade, keep them clipped off. This prolongs the blooming season of daisies (and most other annuals and perennials), and keeps the plants looking better, as well.

    Watch for aphids on shrubs and perennials. A strong blast of water from a hose will remove many of them, or spray with insecticidal soap.

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Green flowers may be caused by aster yellows

I had purple coneflowers this summer that never turned purple. Many of the flowers were green. What causes this?

coneflower

Coneflowers are one of the many species that may be affected by a disease called aster yellows.

There is a disease called aster yellows that may be affect coneflowers and many other species. Several years ago, I learned from Extension agent Bob Ary that the condition, which is an infection of a phytoplasma spread by leafhoppers, can cause a variety of symptoms: green flowers,  stunting, yellowing, abnormal shoots, tiny leaves that emerge from the seed heads.

In most cases, a plant infected with aster yellows will eventually die, but even if the plant lives, there is the chance that the condition could spread to other plants by any insect that feeds on the plant.

Aster yellows can’t be cured, and it’s not practical to try to control leafhoppers, Ary said. Garden experts say that the disease is sporadic enough that it may only affect a few plants in a bed. When you remove the plant, it’s also a good idea to remove nearby weeds that may be secondary sources of the disease.

Garden events in Middle Tennessee

Sept. 7 – Beekeeping 101, backyard beekeeping basics, 10 a.m. – noon at WarnerParkNatureCenter. This adult-level class is led by Vera Vollbrecht, Melissa Donahue, and Dganit Eldar. Call to register, 352-6299.

Sept. 17 – Perennial Plant Society meets at Cheekwood in Botanic Hall, speaker is landscape designer Marty DeHart on “Problem Area Perennials.” Refreshments at 6:30, meeting at 7, open to the public.

Sept. 21 – Oct. 31: Cheekwood Harvest Fall Festival includes scarecrows along the garden paths, a pumpkin patch, guided garden tours and nearly 5,000 autumn-hued chrysanthemums in the Robertson Ellis Color Garden, planted specifically for Cheekwood Harvest. The full schedule is at www.cheekwood.org

Sept. 21 and 22: The Tennessee Gesneriad Society annual show and sale at Cheekwood in Botanic Hall. There will be many rare and unusual plants on display as well as for sale.  Hours on Saturday September 21 are 9:30a.m.-4:30p.m., and on Sunday September 22 are 11:00a.m.-4:30 p.m. For more info, call Julie at 615-364-8459.

Sept. 26:  Middle Tennessee Hosta Society meets at Cheekwood in the Potter Room; speaker is David Bates of Bates Nursery on shrubs that tolerate shade for use in hosta gardens. The meeting is at 6:30 and is open to the public.

Sept. 28: Welcoming Fall Wildflower Hike at ShelbyBottomsNatureCenter. A short naturalist-led hike for all ages, 10 – 11 a.m. Call (862-8539) or email (shelbybottomsnature@nashville.gov) to register.

At WarnerParkNatureCenter, Deb Beazley leads adults on a stroll through a meadow to enjoy the fall wildflowers, 9 – 11 a.m. Call 352-6299 to register.

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2 Responses

  1. Lovely coneflowers………

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