Usda Hardiness Zone 2024. The usda released a new hardiness zone map and half of the country has shifted. 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.
The usda plant hardiness zones have long been a standard in communicating plant suitability across the us. Wildflowers and native species are among the best perennial flowers to grow in fall.