USDA Hardiness Zone Map

The USDA Hardiness Zone Map and chart should be consulted before ordering seeds or deciding what to grow in your garden, flower bed or lawn. Find your hardiness zone and then you can use that to reference the seed packet or the catalog before ordering.

 

USDA Hardiness Zone Chart

Zone Fahrenheit Celsius Example Cities
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 Hardiness Zone Map

USDA Hardiness Zone Map

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