USDA Plant Hardiness Zones

Plant Hardiness Map

Map

** Click on your State abbreviation below to go to that region **

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USDA Hardiness Zones and Average Annual Minimum Temperature Range

  Zone    Fahrenheit      Celsius      Example Cities  
1 Below -50 F  Below -45.6 CFairbanks, Alaska;   Resolute, Northwest Territories
2a-50 to -45 F  -42.8 to -45.5 CPrudhoe Bay, Alaska;   Flin Flon, Manitoba  
2b-45 to -40 F-40.0 to -42.7 CUnalakleet, Alaska;   Pinecreek, Minnesota 
3a-40 to -35 F-37.3 to -39.9 CInternational Falls, Minnesota;   St. Michael, Alaska
3b-35 to -30 F-34.5 to -37.2 CTomahawk, Wisconsin;   Sidney, Montana
4a-30 to -25 F-31.7 to -34.4 CMinneapolis/St.Paul, Minnesota;   Lewistown, Montana
4b-25 to -20 F-28.9 to -31.6 CNorthwood, Iowa; Nebraska
5a-20 to -15 F-26.2 to -28.8 CDes Moines, Iowa;   Illinois
5b-15 to -10 F-23.4 to -26.1 CColumbia, Missouri;   Mansfield, Pennsylvania
6a-10 to -5 F-20.6 to -23.3 CSt. Louis, Missouri; Lebanon, Pennsylvania
6b-5 to 0 F  -17.8 to -20.5 CMcMinnville, Tennessee;   Branson, Missouri 
7a0 to 5 F-15.0 to -17.7 COklahoma City, Oklahoma;   South Boston, Virginia
7b5 to 10 F-12.3 to -14.9 CLittle Rock, Arkansas;   Griffin, Georgia
8a 10 to 15 F-9.5 to -12.2 CTifton, Georgia;   Dallas, Texas 
8b15 to 20 F-6.7 to -9.4 CAustin, Texas;   Gainesville, Florida
9a20 to 25 F-3.9 to -6.6 CHouston, Texas;   St. Augustine, Florida
9b25 to 30 F-1.2 to -3.8 CBrownsville, Texas;   Fort Pierce, Florida
10a30 to 35 F1.6 to -1.1 CNaples, Florida;   Victorville, California
10b35 to 40 F4.4 to 1.7 CMiami, Florida;   Coral Gables, Florida
11above 40 Fabove 4.5 CHonolulu, Hawaii;   Mazatlan, Mexico

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