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USDA Plant Hardiness Zone Map

South-Midwest US

Arkansas, Colorado, Illinois, Kansas, Louisiana, Mississippi, Missouri, New Mexico, Texas

Check the color of the section in your area of the map with the color key below. Zones 4b through 9b represented here.

south-midwest area, South-Midwest, 50 States, USA, Arkansas, Colorado, Illinois, Kansas, Louisiana, Mississippi, Missouri, New Mexico, Texas

south-midwest area, South-Midwest, 50 States, USA, Arkansas, Colorado, Illinois, Kansas, Louisiana, Mississippi, Missouri, New Mexico, Texas

Temperature Color Code Key, South-Midwest, 50 States, USA, Arkansas, Colorado, Illinois, Kansas, Louisiana, Mississippi, Missouri, New Mexico, Texas

USDA Hardiness Zones and Average Annual Minimum Temperature Range

USDA Zone	Temperature Range	Example Cities
1	Below -50 F (-45.6 C)	Fairbanks, Alaska Resolute, Northwest Territories (Canada)
2a	-50 to -45 F (-42.8 to -45.5 C)	Prudhoe Bay, Alaska Flin Flon, Manitoba (Canada)
2b	-45 to -40 F (-40.0 to -42.7 C)	Unalakleet, Alaska Pinecreek, Minnesota
3a	-40 to -35 F (-37.3 to -39.9 C)	International Falls, Minnesota St. Michael, Alaska
3b	-35 to -30 F (-34.5 to -37.2 C)	Tomahawk, Wisconsin Sidney, Montana
4a	-30 to -25 F (-31.7 to -34.4 C)	Minneapolis/St.Paul, Minnesota Lewistown, Montana
4b	-25 to -20 F (-28.9 to -31.6 C)	Northwood, Iowa Nebraska
5a	-20 to -15 F (-26.2 to -28.8 C)	Des Moines, Iowa Illinois
5b	-15 to -10 F (-23.4 to -26.1 C)	Columbia, Missouri Mansfield, Pennsylvania
6a	-10 to -5 F (-20.6 to -23.3 C)	St. Louis, Missouri Lebanon, Pennsylvania
6b	-5 to 0 F (-17.8 to -20.5 C)	McMinnville, Tennessee Branson, Missouri
7a	0 to 5 F (-15.0 to -17.7 C)	Oklahoma City, Oklahoma South Boston, Virginia
7b	5 to 10 F (-12.3 to -14.9 C)	Little Rock, Arkansas Griffin, Georgia
8a	10 to 15 F (-9.5 to -12.2 C)	Tifton, Georgia Dallas, Texas
8b	15 to 20 F (-6.7 to -9.4 C)	Austin, Texas Gainesville, Florida
9a	20 to 25 F (-3.9 to -6.6 C)	Houston, Texas St. Augustine, Florida
9b	25 to 30 F (-1.2 to -3.8 C)	Brownsville, Texas Fort Pierce, Florida
10a	30 to 35 F (1.6 to -1.1 C)	Naples, Florida Barstow, California
10b	35 to 40 F (4.4 to 1.7 C)	Miami, Florida Coral Gables, Florida
11	above 40 F (4.5 C)	Honolulu, Hawaii Mazatlan, Mexico

Listed by zone. -- Names of representative plants listed under the coldest zones in which they normally succeed.
Listed alphabetically. -- Cold hardiness ratings (zones) for selected woody plants.

Go to the USDA Hardiness Zone Map

USDA Miscellaneous Publication No. 1475. Issued January 1990
Authored by Henry M. Cathey while Director, U.S. National Arboretum
Edited, formatted and prepared for the US National Arboretum web site by Ramon Jordan, March 1998
U.S. National Arboretum, Agricultural Research Service, U.S. Department of Agriculture,
Washington, DC 20002.
Updated and edited, by Yankee Gardener, February 2001

Back to the USDA Hardiness Zone Map Introduction Page

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