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USDA Plant Hardiness Zone Map

This map shows 11 different zones, each of which represents an area of winter hardiness for the plants of agriculture and our natural landscape. The corresponding temperatures represent the lowest temperatures that can be expected each year.

[Your browser doesn't support IFrames. <a href="http://www.arborday.org/TreeInfo/ZoneLookup.cfm" target="_blank">Click here</a> to look up your arborday.org hardiness zone.]

Zone	°F
1	below -50
2a	-50 to -45
2b	-45 to -40
3a	-40 to -35
3b	-35 to -30
4a	-30 to -25
4b	-25 to -20
5a	-20 to -15
5b	-15 to -10
6a	-10 to -5
6b	-5 to 0
7a	0 to 5
7b	5 to 10
8a	10 to 15
8b	15 to 20
9a	20 to 25
9b	25 to 30
10a	30 to 35
10b	35 to 40
11	above 40

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USDA Plant Hardiness Zone Map