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USDA Plant Hardiness Zone Map—North-midwest U.S. |
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Zones 2b-6a—Iowa, Minnesota, Montana, Nebraska, North Dakota, South Dakota, Wisconsin, Wyoming
Check the color of your area of the map with the color key to the right.
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The 2003 US National Arboretum USDA Plant Hardiness Zone Map
USDA Miscellaneous Publication No. 1475, Issued January 1990