Interactive 2012 USDA Gardening and Plant Hardiness Zone Map for Colorado

Based on the 2012 USDA Hardiness Zone Map, this interactive map covers the state of Colorado which ranges from USDA Zone 4b to USDA Zone 11a.

USDA Zone 3a

-40°F to -35°F

USDA Zone 3b

-35°F to -30°F

USDA Zone 4a

-30°F to -25°F

USDA Zone 4b

-25°F to -20°F

USDA Zone 7b

5°F to 10°F

USDA Zone 7a

0°F to 5°F

USDA Zone 6b

-5°F to 0°F

USDA Zone 6a

-10°F to -5°F

USDA Zone 5b

-15°F to -10°F

USDA Zone 5a

-20°F to -15°F