USDA Plant Hardiness Zone Map

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Map of USDA Plant Hardiness Zones

Average Annual Minimum Temperature
Zone Temperature ºF Temperature ºC
1 Below -50 Below -45.6
2A -45 to -50 -42.8 to -45.5
2B -40 to -45 -40.0 to -42.7
3A -35 to -40 -37.3 to -40.0
3B -30 to -35 -34.5 to -37.3
4A -25 to -30 -31.7 to -37.2
4B -20 to -25 -28.9 to -31.6
5A -15 to -20 -26.2 to -28.8
5B -10 to -15 -23.4 to -26.1
6A -5 to -10 -20.6 to -23.3
6B 0 to -5 -17.8 to -20.5
7A 5 to 0 -15.0 to - 17.7
7B 10 to 5 -12.3 to -15.0
8A 15 to 10 -9.5 to -12.2
8B 20 to 15 -6.7 to -9.4
9A 25 to 20 -3.9 to -6.6
9B 30 to 25 -1.2 to -3.8
10A 35 to 30 1.6 to -1.1
10B 40 to 35 4.4 to 1.7
11 Above 40 Above 4.5