Interactive USDA Gardening and Plant Hardiness Zone Map for Colorado

Based on the 1990 USDA Hardiness Zone Map, this interactive version covers the state of Colorado which ranges from USDA Zone 2b to USDA Zone 7a.

USDA Zone 2b

-45°F to -40°F

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 5a

-20°F to -15°F

USDA Zone 5b

-15°F to -10°F

USDA Zone 6a

-10°F to -5°F

USDA Zone 6b

-5°F to 0°F

USDA Zone 7a

0°F to 5°F

What are Hardiness Zones, Gardening Zones, Growing Zones and Plant Zones?

Hardiness Zones, Gardening Zones, Growing Zones and Plant Zones refer to defined geographic regions that can support specific plants, flowers and trees. The zones define a minimum range of temperatures that a plant or tree can survive safely in that zone. The most commonly used Hardiness Zones were defined by the USDA. The USDA provides a hard copy map that displays these zone throughout the US. The last update to this map covers minimum temperatures from 1961 to 1990. In 2012 the USDA released an updated Colorado hardiness zone map covering the period of 1981-2010

Zone Maps for Adjacent States

Arizona Zone Map
Kansas Zone Map
Nebraska Zone Map
New Mexico Zone Map
Oklahoma Zone Map
Utah Zone Map
Wyoming Zone Map

Other Interactive Gardening Maps and Data for Colorado

Colorado 2012 USDA Hardiness Zone Map
Map of Colorado Record High/Low Temperatures
Colorado First Frost Date Map
Colorado Last Frost Date Map
Interactive Colorado Drought Monitor Map
Interactive Map of Colorado Drought Conditions
Interactive Map of Colorado Heat Zones
Interactive Map of Colorado Ecoregions
Interactive Maps of Native Colorado Trees and Plants

Zoom to Major Cities in Colorado

Zoom to Arvada USDA Zone 5bArvada - USDA Zone 5b
Zoom to Aurora USDA Zone 5bAurora - USDA Zone 5b
Zoom to Boulder USDA Zone 5aBoulder - USDA Zone 5a
Zoom to Colorado Springs USDA Zone 5aColorado Springs - USDA Zone 5a
Zoom to Denver USDA Zone 5bDenver - USDA Zone 5b
Zoom to Fort Collins USDA Zone 5bFort Collins - USDA Zone 5b
Zoom to Grand Junction USDA Zone 7aGrand Junction - USDA Zone 7a
Zoom to Lakewood USDA Zone 5aLakewood - USDA Zone 5a
Zoom to Littleton USDA Zone 5aLittleton - USDA Zone 5a
Zoom to Pueblo USDA Zone 5bPueblo - USDA Zone 5b
List of Hardiness Zones for All Colorado Cities...

Interactive Maps of Colorado Native Plants Distribution Areas

Acer glabrum - Rocky Mountain maple Map
Alnus tenuifolia - thinleaf alder Map
Amelanchier utahensis - Utah serviceberry Map
Artemisia tridentata - big sagebrush Map
Celtis reticulata - netleaf hackberry Map
Cowania mexicana - cliffrose Map
Fraxinus anomala - singleleaf ash Map
Juniperus osteosperma - Utah juniper Map
Pinus edulis - pinyon Map
Populus fremontii - Fremont cottonwood Map
Prunus virginiana - common chokecherry Map
Quercus gambelii - Gambel oak Map
Salix exigua - coyote willow Map
Sambucus glauca - blueberry elder Map
Shepherdia argentea - silver buffaloberry Map