Virginia Tech Dendrology Factsheets

This USDA plant hardiness zone map is based on USDA Miscellaneous Publication 814, "Plant Hardiness Zone Map," which was revised in 1965 and more recently in 2012. For our purposes, zonal subdivisions have been combined. More information about plant hardiness zones
Canada hardiness zones developed by Natural Resources Canada
Mexico range map based on the 1965 hardiness zone map.