USDA Plant Hardiness Zone Map

The 2012 USDA 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 map is based on the average annual minimum winter temperature, divided into 10-degree F zones.

Average Annual Extreme
Minimum Temperature

1976-2005

Northwest U.S.
Northwest U.S.
Southwest U.S.
Southwest U.S.
Northern Midwest U.S.
Northern Midwest U.S.
Southern Midwest U.S.
Southern Midwest U.S.
Northeast U.S.
Northeast U.S.
Southeast U.S.
Southeast U.S.