What's My USDA Hardiness Zone?

Your USDA plant hardiness zone tells you which plants will survive your winters and when to plant them. Use your location for an instant answer, or tap your state and county on the map below.

Where do you garden? Tap your state.

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Tap any state (US or Canada) to zoom in and pick your exact zone.

Browse all USDA zones

Already know your zone? Jump straight to its planting guide.

How USDA hardiness zones work

The USDA Plant Hardiness Zone Map divides North America into 13 zones based on the average annual minimum winter temperature, in 10°F bands. Zone 1 is the coldest (below −50°F) and Zone 13 the warmest (above 60°F). Each zone is split into “a” and “b” half-zones (5°F each). Knowing your zone tells you which perennials will overwinter and sets the planting and harvest dates you'll see throughout this database.

Add this free zone finder to your site

Free for gardening blogs, extension sites, and nurseries. Paste this snippet — it's responsive and links visitors to full planting guides.

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