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  • Upcoming Garden Events

    Sept. 30: The Nashville Herb Society presents Through the Garden Gate: A Glimpse of Edwardian England, 8 a.m. – 3 p.m. at Cheekwood Botanic Hall. Celebrate the gardens, foods and flowers that delighted Downton Abby family and friends at the turn of the 20th century. The event begins with a hearty Edwardian breakfast, followed by three speakers: Marta McDowell on Beatrix Potter’s Gardening Life; Geraldine A. Laufer on Tussie Mussie – Victorian art of expressing yourself in the language of flowers; and Terry White, The English Garden event florist . Registration includes breakfast, box lunch in the garden with music, English tea and cookies. To learn more or to register, visit www.herbsocietynashvlle.org.

    Tips & tasks – September

    Cut the dead tops of coneflowers, but leave enough for goldfinches to enjoy the seeds.

    Plant cool-weather vegetables for a fall crop: spinach, mustard and turnip greens, radishes, leaf lettuce.

    Start a new lawn of cool-season grass, such as fescue, or refurbish or repair establish lawns.

    Don’t let the soil of newly planted grass dry out. New grass needs about an inch of water per week.

    It’s still warm, so continue to water and weed garden beds as needed.

    Remove dead foliage, spent flowers and other garden debris; replenish mulch as needed.

    Continue to harvest produce, which may be getting a boost now from slightly cooler weather. Keep watering sage, rosemary and other perennial herbs so they’ll be in good shape to get through winter.

    Prepare to bring houseplants back indoors: remove dead leaves, scrub soil from the sides of the pots, treat for insects. Bring tropical plants in before nighttime temperatures dip to 55 degrees.

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Tomato troubles: Blossom end rot

What can I do to keep tomatoes from forming a black spot on the bottom? They look beautiful, then you turn them over and see it. Are the tomatoes safe to eat if you cut the spot out?

 

Tomatoes

Young tomatoes may be susceptible to blossom end rot.

The black spot on the bottoms of tomatoes is a condition called blossom end rot. Rodale’s Vegetable Garden Problem Solver provides a concise explanation:

Blossom end rot is usually caused by water stress due to lack of moisture, which hampers the plant’s ability to take up enough calcium from the soil. But it can also be caused by too much water, soil pH that is too acidic or too alkaline, too much nitrogen fertilizer, or other problems. The area first turns tan and leathery, and then other pathogens can invade and cause the rot (it turns black and soft).

Rodale suggests removing any tomatoes that show signs of rot so the plant can put energy into developing new, healthy tomatoes. If the soil is dry, water it well and use mulch to conserve moisture. Throughout the season, keep the soil evenly moist by watering as needed.

At the end of the season, be sure to clean up any fruit that falls to the ground, as it may contain secondary rot organisms. And next year, prepare the bed to encourage the plants to develop good root systems – plant in loose, fertile soil, and check the soil pH to see that it measures above 6.5. Add lime as recommended to raise the pH to 6.5 to 6.8, Rodale suggests.

The experts at Rodale suggest to compost the immature fruit that is beginning to show signs of blossom end rot, because they probably won’t ripen properly anyway, but it also looks like it doesn’t hurt to cut off the spot and use the tomatoes if they’re at a stage that you want to do that. In my experience, once they start to rot, they go quickly, though.

By the way, blossom end rot can also affect peppers, eggplant, squash and melons.

July in the garden: What to do with that bounty of herbs? See the July Garden Calendar at Tennessean.com for herbs information, plus this month’s events, tips and tasks.

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