New Hardiness Zone Map 2024 Missouri. 5b, 6a, 6b, 7a and 7b. The new usda plant hardiness zone map is characterized by shifts to warmer zones in many areas of the map.
The usda hardiness map—the official name is plant hardiness zone map—helps gardeners determine which perennial plants can survive in their climate. Also the previous 2012 map, compare to.