Plant Hardiness Zone MapThe USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The map is based on the average annual minimum winter temperature, divided into 10-degree F zones. Click on the map to the right for a larger view, or for more detail about your area, with a scale down to one-half mile, visit the USDA Plant Hardiness Zone Map website. The site also includes national, state and regional images in a variety of resolutions, and a ZIP code finder that provides the plant hardiness zone for all U.S. ZIP codes. 
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