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South-Midwest US Plant Hardiness Map
Arkansas, Colorado, Illinois, Kansas, Louisiana,
Mississippi, Missouri, New Mexico, Oklahoma, Texas
The USDA Plant Hardiness Zone Map
Use this tool to help select
the best plant, tree, or shrub for your local climate.
Check the color of the section in your area of the map with the color key below.
Zones 4b through 9b represented here.
 
USDA Hardiness Zones and Average Annual Minimum Temperature Range
|
1 |
Below -50 F |
Below -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; Victorville, California |
|
10b |
35 to 40 F |
4.4 to 1.7 C |
Miami, Florida; Coral Gables, Florida |
|
11 |
above 40 F |
above 4.5 C |
Honolulu, Hawaii; Mazatlan, Mexico |
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