Plant Zone Map 2025. The usda plant hardiness zone map is the standard by which gardeners and growers can determine which perennial plants are most likely to thrive at a location. Usda’s plant hardiness zone map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location.
Has your garden zone changed? There’s a good chance your zone shifted when the usda updated its plant hardiness map in 2023.