USDA Hardiness Zones list

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Transcript of USDA Hardiness Zones list

  • 7/21/2019 USDA Hardiness Zones list

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    USDA hardiness zones

    Zone From To

    0a < 53.9 C (65 F)

    b 53.9 C (65 F) 51.1 C (60 F)

    1a 51.1 C (60 F) 48.3 C (55 F)

    b 48.3 C (55 F) 45.6 C (50 F)

    2a 45.6 C (50 F) 42.8 C (45 F)

    b 42.8 C (45 F) 40 C (40 F)

    3a 40 C (40 F) 37.2 C (35 F)

    b 37.2 C (35 F) 34.4 C (30 F)

    4a 34.4 C (30 F) 31.7 C (25 F)

    b 31.7 C (25 F) 28.9 C (20 F)

    5a 28.9 C (20 F) 26.1 C (15 F)

    b 26.1 C (15 F) 23.3 C (10 F)

    6a 23.3 C (10 F) 20.6 C (5 F)

    b 20.6 C (5 F) 17.8 C (0 F)

    7a 17.8 C (0 F) 15 C (5 F)

    b 15 C (5 F) 12.2 C (10 F)

    8a 12.2 C (10 F) 9.4 C (15 F)

    b 9.4 C (15 F) 6.7 C (20 F)

    9a 6.7 C (20 F) 3.9 C (25 F)

    b 3.9 C (25 F) 1.1 C (30 F)

    10a 1.1 C (30 F) +1.7 C (35 F)

    b +1.7 C (35 F) +4.4 C (40 F)

    11a +4.4 C (40 F) +7.2 C (45 F)

    b +7.2 C (45 F) +10 C (50 F)

    12a +10 C (50 F) +12.8 C (55 F)

    b > +12.8 C (55 F)