The Vegetable Garden

Zones 3a through 9b

    Check the color of the section in your area of the map with the color key below.

    Zones 3a through 9b represented here.

    North-West region Hardiness Zone Map
    Zones Color Key

    USDA Hardiness Zones and Average Annual Minimum Temperature Range

    Return To Planting Zones Map


    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