| |
Iowa, Minnesota, Montana, Nebraska, North Dakota, South Dakota,
Wisconsin, Wyoming
This is the 2003 US National Arboretum "Web Version" of the 1990 USDA Plant Hardiness Zone Map.
Check the color of the section in your area of the map with the color key below.
Zones 2b through 6a 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 |
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 website by Ramon Jordan, March 1998 and revised March 2001
U.S. National Arboretum, Agricultural Research Service, U.S. Department of
Agriculture, Washington, DC 20002
Note: This publication is not
copyrighted, and permission to reproduce all or any part of it is not required. |
