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United States Hardiness Zones

Use this map to locate your Hardiness Zone, click on the regions below to zoom in to your area.

Alaska - North West - North Central - North East
Hawaii - South West - South Central - South East
By State

Note: This map publication is not copyrighted, and permission to reproduce all or any part of it is not required.
This USDA Plant Hardiness Zone Map is made possible in part by: The United States National Arboretum and The U.S.D.A.

Or - Click on your State abbreviation below to go to that region.

AK AL AR AZ CA CO CT DC DE FL GA HI IA ID IL IN KS KY
LA MA MD ME MI MN MO MS MT NC ND NE NH NJ NM NV NY
OH OK OR PA RI SC SD TN TX UT VA VT WA WI WV WY
 

How to Use the Map

Zones 2-10 in the map have been subdivided into light- and dark-colored sections (a and b) that represent 5 F (2.8 C) differences within the 10 F (5.6 C) zone. The light color of each zone represents the colder section; the dark color, the warmer section. Zone 11 represents any area where the average annual minimum temperature is above 40 F (4.4 C). The map shows 20 latitude and longitude lines. Areas above an arbitrary elevation are traditionally considered unsuitable for plant cropping and do not bear appropriate zone designations. There are also island zones that, because of elevation differences, are warmer or cooler than the surrounding areas and are given a different zone designation. Note that many large urban areas carry a warmer zone designation than the surrounding countryside. The map-contains as much detail as possible, considering the vast amount of data on which it is based and its size.  (USDA Miscellaneous Publication No. 1475, Issued January 1990)