All New Square Foot Gardening Gardeners in the southeast welcome the cooler temperatures and perfect planting season of September and October. Perennials, trees and shrubs are best planted now. Along with fescue (the predominate lawn grass type) they can spend the winter establishing strong, healthy roots before diverting their energy to spring leafing and flowering. For perennials, it’s dig up, dig in and divide. Plant bulbs for spring flowering. Be sure to give all plantings a good share of water. Starting now and over the next couple of months, once soil has cooled to less than 60 degrees, plant the bulbs of spring bloomers such as crocus, anemone, daffodils, hyacinths and tulips in well-drained soil, about three times deeper than the diameter of the bulbs.

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