Usda Plant Hardiness Zone Map 2025 Pdf Free Download. Each growing zone is 10°f warmer (or colder) in an average winter than the adjacent. Growing zones are more granular, thanks to improvements in technology and.
Each growing zone is 10°f warmer (or colder) in an average winter than the adjacent. Usda’s plant hardiness zone map is the standard by which gardeners and growers can determine which plants are most.