| | USDA Plant Hardiness Zone MapThe 2001 US National Arboretum "Web Version" of the USDA Plant Hardiness Zone Map (USDA Miscellaneous Publication No. 1475) was Issued in January 1990.
You can click on the following link to visit
the United States Department of Agriculture Plant Hardiness Zone Map
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Plant Hardiness Zone Map of Maine
University of Maine Cooperative Extension
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About MRS
USDA Zone Map