Hardy hibiscus plants (Hibiscus spp.) are more cold-tolerant than tropical varieties, such…

Hardy hibiscus plants (Hibiscus spp.) are more cold-tolerant than tropical varieties, such as H. rosa-sinensis, which are injured by frost and freezing temperatures. Whereas tropical hibiscus is perennial only in U.S. Department of Agriculture plant hardiness zones 9 and 10, hardy hibiscus plants, such as rose mallow …

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