USDA Hardiness Zone Finder

Find your USDA plant hardiness zone by entering your ZIP code. Knowing your zone helps you choose plants that will thrive in your climate.

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How It Works

The USDA Plant Hardiness Zone Map divides the United States into 13 zones based on average annual minimum winter temperatures. Each zone represents a 10-degree Fahrenheit range, split into "a" and "b" halves. When you shop for perennial plants, trees, or shrubs, look for ones rated for your zone or lower. A plant rated for Zone 5 will survive winters in Zones 5 through 11, but may not make it through a Zone 4 winter. Your zone is your starting point for choosing what to grow.