New Hardiness Zone Map 2024 Usa. Mapping plant hardiness zones, heat zones, growing degree days, and cumulative drought severity throughout this century. The plant hardiness zones detailed in the new map define 13 distinct zones across the us and its territories.

Mapping plant hardiness zones, heat zones, growing degree days, and cumulative drought severity throughout this century. Here is how you can use the new usda zone map for your garden and how to know, if in the new version, your hardiness zone has changed.