New Hardiness Zone Map 2024. The plant hardiness zone map is the national standard for gardeners and landscapers to determine the plants that are most likely to survive the coldest and. 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.
“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. Department of agriculture has an updated plant hardiness zone map.