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Hardiness Zone Map
Hardiness Zone Map
USDA Hardiness Zone Map 
Average Annual Minimum Temperature | | Zone | Temperature ?C | Temperature ?F | | | | | 1 | -45.6 and below | below -50 | | 2a | -42.8 to 45.5 | -45 to -50 | | 2b | -40.0 to -42.7 | -40 to -45 | | 3a | -37.3 to -40.0 | -35 to -40 | | 3b | -34.5 to -37.2 | -30 to -35 | | 4a | -31.7 to -34.4 | -25 to -30 | | 4b | -28.9 to -31.6 | -20 to -25 | | 5a | -26.2 to -28.8 | -15 to -20 | | 5b | -23.4 to -26.1 | -10 to -15 | | 6a | -20.6 to -23.3 | -5 to -10 | | 6b | -17.8 to -20.5 | 0 to -5 | | 7a | -15.0 to -17.7 | 5 to 0 | | 7b | -12.3 to -15.0 | 10 to 5 | | 8a | -9.5 to -12.2 | 15 to 10 | | 8b | -6.7 to -4.0 | 20 to 15 | | 9a | -3.9 to -6.6 | 25 to 20 | | 9b | -1.2 to -3.8 | 30 to 25 | | 10a | 1.6 to -1.1 | 35 to 30 | | 10b | 4.4 to 1.7 | 40 to 35 | | 11 | 4.5 and above | 40 and above |
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