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Hardiness zones

An hardiness zone is a geographically defined area in which a specific category of plant life is capable of growing, as defined by climatic conditions, including its ability to withstand the minimum temperatures of the zone.

Area Temp (°F) Temp (°C)
2 -50 / -40 -45,5 / -40,0
3 -40 / -30 -40,0 / -34,5
4 -30 / -20 -34,4 / -28,9
5 -20 / -10 -28,8 / -23,4
6 -10 / 0 -23,3 / -17,8
7 0 / 10 -17,7 / -12,3
8 10 / 20 -12,2 / -6,7
9 20 / 30 -6,6 / -1,2
10 30 / 40 -1,1 / 4,4