USDA Plant Hardiness
Zone Map
These maps are divided into 10 zones. Each zone is based on 10 F (5.6 C) difference in average annual minimal temperature. More detailed map can be found at USDA web site
These maps are divided into 10 zones. Each zone is based on 10 F (5.6 C) difference in average annual minimal temperature. More detailed map can be found at USDA web site