A hardiness zone is a geographic area with a similar average minimum temperature. The map is based on the average annual extreme minimum temperature, so people in those areas know which plants can ...

Sometimes called “growing zones” or “gardening zones,” USDA plant hardiness zones refer to areas of a map developed by the ...

The U.S. Department of Agriculture (USDA) has a Plant Hardiness Zone Map that divides the U.S. into 13 different zones, which helps gardeners choose plants that can survive in their respective ...