Hardiness Zone Map

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Hawaii


The 1998 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 10a through 11 represented here.

 

 


USDA Hardiness Zones and Average Annual Minimum Temperature Range

 

 USDA Zone   Temperature Range  Example Cities 
        1   Below -50 F (-45.6C) 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.