USA Plant Hardiness Zone Map
The 2003 US National Arboretum "Web Version" of the USDA Plant Hardiness Zone Map
USDA Miscellaneous Publication No. 1475, Issued January 1990
The color coded map below shows the boundaries between plant hardiness zones. Click on any area within the United States to go to a close-up of that region, which includes a temperature chart for the zones that fall within the selected region.
Back to our botanical home page.