Plant Hardiness Zone 2024. These zones are delineated based on the average annual lowest minimum temperature. The usda plant hardiness zone map is the standard by which gardeners and growers can determine which perennial plants are most likely to thrive at a location.

Find api links for geoservices, wms,. The plant hardiness zone map serves as a guide based on average low temperatures, but other factors and local conditions significantly influence plant survival.