New Hardiness Zone Map 2025 Download. 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. This tool was designed to provide guidelines on what plants to install in their.
The usda plant hardiness zone map divides the country into 13 zones based on average annual minimum temperatures. For the first time in 11 years, the u.s.