Gardening Basics

Heat-Tolerant Plants

For gardens in summer's toasty season, there's no better remedy than a plant that looks good in the heat.

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Profusion series zinnas. Regular garden zinnias come in a wide range of colors but are subject to disease and insect problems, especially powdery mildew. The narrow-leaf zinnia (Zinnia angustifolia) has high pest resistance but limited colors and small flowers. A cross between the two resulted in the Profusion series, which exhibits the best of both — excellent resistance to diseases and insects and more colors than its narrow-leaf parent. First to come out were Profusion White, then Cherry and Orange, then Apricot and Profusion Fire. These zinnias bloom profusely and robustly, even in the heat and humidity of the Deep South. They grow 2 feet tall and wide and don't need to be deadheaded.

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