Us Growing Zones Map 2024. 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. According to the new map released in november 2023, about half of the united states has shifted to a new hardiness zone.

Here is an overview of how the us zones are broken down based on the last frost to the first frost dates. The usda defined hardiness zones for north america and created a map in 1960 that outlines.