Planting Zones Maine - Hardiness, Gardening & Climate Zone
A new plant hardiness zone map from the USDA
Don't Let Winter Kill Your Plants. Follow Your USDA Hardiness Zone - CNET
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Plant Hardiness Zones
University of Maine Cooperative Extension - Community Programs for the people of Maine
Vegetables - Cooperative Extension: Garden and Yard - University of Maine Cooperative Extension
Planting Zones Guide: USDA Hardiness Zone Maps, Temp Zones by Zip Code
State Maps of USDA Plant Hardiness Zones
Yard & Garden