USDA Hardiness Zone Map

Use this map to find your USDA Hardiness Zone, a great guide to help you select plants that will thrive in your yard and planting zone.

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Creating an attractive garden means coordinating colors and selecting eye-catching varieties. However, these aesthetics don't mean much if the weather conditions in your gardening zone will wilt, freeze, or decay tender plants.

Climate maps/planting zone maps, such as the United States Department of Agriculture Hardiness Zone map, show low-temperature extremes by gardening zone. Choose plants best adapted to your planting zone and plant them at the right time to increase your chance of success.

Use climate zone maps as a general guide; many microclimates may exist within a 1-mile radius of your home's gardening zones. Even within your yard's climate zone, variations in exposure and topography can affect plants.

In 2012, the USDA updated the climate zone map with newer data and increased technologies. Using the USDA website, you can now access an interactive planting zone map that lets you zoom into an area and view changes in zones by half-mile increments.

There are two zones that aren't too common—Zone 1 and Zone 2. These zones are just what you think they are—cold, cold, cold—and are found in places like Canada, Alaska, and even Northern Minnesota. Plants that grow in Zone 1 can withstand temperatures below -50 degrees F to -40 degrees F, but most plants can only withstand temperatures in Zones 3 to 10.

Check out plants that are hardy for your zone.

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Zone 3

Most plants native in the U.S. are found within Zones 3 to 10—the toughest of plants can withstand all of these zones. Zone 3 plants can withstand cold temperatures of -40 to -30 degrees F. The upper Midwest states hold most of Zone 3, such as northern parts of Montana, North Dakota, Minnesota, Wisconsin, and Maine.

When to plant: Mid May

Common plants:

See more plants that are hardy in the Midwest.

Zone 4

Zone 4 plants can withstand minimum chilled temps from -30 to -20 degrees F. You can find this zone in Montana, Wyoming, North Dakota, South Dakota, Minnesota, Wisconsin, and Eastern states such as Northern New York, New Hampshire, and Maine.

When to plant: Mid May

Common plants:

Check out more plants that are hardy in the Mountain West.

Zone 5

This zone is another friend of the Midwest and Northeastern states, where humidity thrives over summers, and winters can reach as low as -20 to -10 degrees F. You can find Zone 5 in states like Colorado, Nebraska, Iowa, Wisconsin, Illinois, Indiana, Michigan, and New York.

When to plant: Mid April

Common plants:

Check out more plants that are hardy in the Northeast.

Zone 6

It's the middle of the road for Zone 6. You can find this zone from Pacific Northwest states, such as Washington and Oregon, and stretching over the middle of the U.S. in states like Kansas, Missouri, Illinois, and all the way through Ohio. Plants in this zone can withstand temperatures of -10 to 0 degrees F.

When to plant: Mid April

Common plants:

Check out more plants that are hardy in the Pacific Northwest.

Zone 7

Winters usually don't hit the negatives in this zone. Plants in Zone 7 can handle temperatures of 0 to 10 degrees F. You can find this zone in upper parts of the West (Washington, Oregon) and down through upper Texas, Oklahoma, and all the way through Virgina and North Carolina.

When to plant: Mid April

Common plants:

Zone 8

Things are starting to heat up in Zone 8. In this zone, native plants are loving the warmth. Not only that, but plants will start to have a longer growing season in Zone 8. You can find this zone consuming the West Coast and most of the South, such as Texas, Louisiana, Mississippi, Alabama, Georgia, and the Carolinas.

When to plant: Mid March

Common plants:

Check out more plants that are hardy in the Desert Southwest.

Zone 9

It's pure California dreaming with hot and heavy temperatures hitting this zone. These plants can withstand temperatures as low as 20 to 30 degrees F but thrive in 70-90 degree temperatures. You can find Zone 9 consuming California's landscape, along with Southern Texas, Louisiana, and Florida.

When to plant: Mid February

Common plants:

Check out more plants that are hardy in the South.

Zone 10

Zone 10 holds some of the hottest temperatures in the U.S., prevalent in tropical places like Southern California and Southern Florida. Plants in this zone can handle temperatures as low as 30 to 40 degrees.

When to plant: Mid January

Common plants:

Check out more plants that are hardy in Southern California.

Zone 11

Tropical plants flourish in Zone 11, which covers Hawaii. This zone holds year-round heat, and plants can withstand temperatures above 40 to 50 degrees F. There is no frost whatsoever, and native plants thrive throughout the whole year.

When to plant: Any time

Common plants:

Download a Map of Your Area

Find your state from the list below to download a larger climate zone map that shows more detail of the gardening zones in your state. (Free, one-time registration required for non-BHG.com members.)

Alabama

Alaska

Arizona

Arkansas

California

Colorado

Connecticut

Delaware

Florida

Georgia

Hawaii

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Canada

Canada

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