Hardiness Zones

1A	-60 to -55	-51.1 to -48.3
1B	-55 to -50	-48.3 to -45.6
2A	-50 to -45	-45.6 to -42.8
2B	-45 to -40	-42.8 to -40
3A	-40 to -35	-40 to -37.2
3B	-35 to -30	-37.2 to -34.4
4A	-30 to -25	-34.4 to -31.7
4B	-25 to -20	-31.7 to -28.9
5A	-20 to -15	-28.9 to -26.1
5B	-15 to -10	-26.1 to -23.3
6A	-10 to -5	-23.3 to -20.6
6B	-5 to 0	-20.6 to -17.8
7A	0 to 5	-17.8 to -15
7B	5 to 10	-15 to -12.2
8A	10 to 15	-12.2 to -9.4
8B	15 to 20	-9.4 to -6.7
9A	20 to 25	-6.7 to -3.9
9B	25 to 30	-3.9 to -1.1
10A	30 to 35	-1.1 to 1.7
10B	35 to 40	1.7 to 4.4
11a	40 to 45	4.4 to 7.2
11b	45 to 50	7.2 to 10
12a	50 to 55	10 to 12.8
12b	55 to 60	12.8 to 15.6
13a	60 to 65	15.6 to 18.3
13b	65 to 70	18.3 to 21.1