Arbor Day Foundation 2015 Hardiness Zone Map
The Arbor Day Foundation developed this U.S. Hardiness Zone Map based upon data from 5,000 National Climatic Data Center cooperative stations across the continental United States.
USDA Hardiness Zone Map
Search the U.S. Department of Agriculture (USDA) plant hardiness zone map by zip code. This interactive map divides regions based on average minimum temperatures.
Sunset Climate Zone Maps
Sunset’s regional climate zone maps are designed to tell you where a plant will thrive year-round.