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U.S. Hardiness Zones

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What is my hardiness zone?

Enter your ZIP or Postal Code and we'll tell you where you fall in the Hardiness Zones database.

The United States Department of Agriculture (USDA) has devised a system to provide gardeners with a basic guide to plant hardiness – how much winter cold a plant can withstand. The Hardiness Zone Map system divides the United States and Canada into numbered zones based on lowest average winter temperature. Even within a zone, different micro-climates exist, such as large urban areas which may be warmer or land situated at different elevations.
Map courtesy of planthardiness.ars.usda.gov





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