New Hardiness Zone Map 2024. Department of agriculture shows the agency’s new plant hardiness zone map updated on wednesday, nov. “the new map is about 2.5 degrees warmer than the previous map on average, which puts about half the country into the next warmer half zone, while half.
This essential tool is a. With the new usda plant hardiness map, our state now recognizes larger areas of zone 5a, particularly in urban and southwestern areas, supporting a broader.