The AHS Heat Zone Map isn’t new. The American Horticultural Society developed it in 1960 and updated it in 1990. It has become an important reference for knowing both the cold and heat tolerances of garden plants. Many perennials in southern U.S. gardens struggle in the extreme heat and humidity. The heat zone map developed by AHS is […]
Archive for January, 2017
Southern Gardeners Should Use The AHS Heat Zone Map
Posted by Hugh on January 1st, 2017
Posted in Evergreen, Garden ecology, Heat Tolerance, Native Plant, Pests, Platycodon (Balloon flower), Purchasing Plants, Regional, Southern Appalachian Region, Summer heat tolerant, Sweetgum (Liquidambar), Trees & Shrubs, Uncategorized, winter hardiness, Winter Protection 
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