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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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Rose of Sharon is an easy summer favorite

I remember a large Rose of Sharon shrub that grew in my grandmother’s yard that had big, pretty flowers every summer. I’d like to have one for my own garden. Can this shrub be started from cuttings?

Lil Kim Proven Winners

Lil’ Kim Rose of Sharon (H. syriacus) from Proven Winners Plants.

The old-fashioned rose of Sharon, or shrub althaea (Hibiscus syriacus), is easy to grow, and often pops up in unexpected places from dropped seeds. It can also be propagated from stem cuttings. Here are general guidelines for taking cuttings of rose of Sharon and other woody ornamentals:

Cut lengths of softwood (soft, succulent new growth) or semi-hardwood (partially mature wood of the current season’s growth) about six inches long from a healthy host plant. Remove the bottom leaves, and dip the cut ends in rooting hormone powder. Stick the cut ends about one-third their length into a rooting medium that drains well, such as perlite or vermiculite. Cover the cuttings with some sort of plastic covering to maintain a humid environment, and place them in indirect light.

Keep the rooting medium moist until roots develop. It will likely take several weeks, but you’ll know the cuttings have grown roots when you tug gently on the cuttings and feel resistance. Transplant them into containers to allow them to grow to a larger size before you plant them in the garden.

Rose of Sharon grows and blooms best in full sun, and thrives in almost any well-drained soil. Once established, it tolerates heat and drought. Flowers bloom on new growth, so if it needs pruning, you can do that task in winter.

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