Archive for the ‘Platycodon (Balloon flower)’ Category

Southern Gardeners Should Use The AHS Heat Zone Map

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 […]