Usda Hardiness Zone 2024. Will the new map change what gardeners should plant this spring? 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 hardiness zone map is a valuable tool for assessing plant hardiness based on average annual extreme minimum winter temperatures.  — sunlight, temperature, rainfall and soil type all help determine whether a plant will thrive or not.