USDA Hardiness Zone By Zip Code – Look Up Tool

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Look up your hardiness zone by zip code.

USDA Hardiness Zone By Zip Code Search

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The hardiness zones lookup is based on raw data from the 2012 USDA Plant Hardiness Zone Map and the Prism Climate Group at Oregon State University.

What is the USDA Plant Hardiness Zone Map?

Gardeners use the USDA Plant Hardiness Zone Map to check which plants can grow where. Using your zip code or by looking at a map, you determine what plants can grow outside in your garden.

It can also be used for house plants to indicate where you can grow them outdoors instead of in your home.

USDA Hardiness Zone and Temperatures (F° and C°)

USDA Hardiness Zone	Temperature Range (°F)	Temperature Range (°C)
0a	< −65 °F	−53.9 °C
0b	−65 to −60 °F	−53.9 to −51.1 °C
1a	−60 to −55 °F	−51.1 to −48.3 °C
1b	−55 to −50 °F	−48.3 to −45.6 °C
2a	−50 to −45 °F	−45.6 to −42.8 °C
2b	−45 to −40 °F	−42.8 to −40 °C
3a	−40 to −35 °F	−40 to −37.2 °C
3b	−35 to −30 °F	−37.2 to −34.4 °C
4a	−30 to −25 °F	−34.4 to −31.7 °C
4b	−25 to −20 °F	−31.7 to −28.9 °C
5a	−20 to −15 °F	−28.9 to −26.1 °C
5b	−15 to −10 °F	−26.1 to −23.3 °C
6a	−10 to −5 °F	−23.3 to −20.6 °C
6b	−5 to 0 °F	−20.6 to −17.8 °C
7a	0 to 5 °F	−17.8 to −15 °C
7b	5 to 10 °F	−15 to −12.2 °C
8a	10 to 15 °F	−12.2 to −9.4 °C
8b	15 to 20 °F	−9.4 to −6.7 °C
9a	20 to 25 °F	−6.7 to −3.9 °C
9b	25 to 30 °F	−3.9 to −1.1 °C
10a	30 to +35 °F	−1.1 to 1.7 °C
10b	+35 to +40 °F	1.7 to 4.4 °C
11a	+40 to +45 °F	4.4 to 7.2 °C
11b	+45 to +50 °F	7.2 to 10 °C
12a	+50 to +55 °F	10 to 12.8 °C
12b	+55 to 60 °F	12.8 to 15.6 °C
13a	60 to 65 °F	15.6 to 18.3 °C
13b	> 65 °F	18.3 °C

Source: US Department of Agriculture

Planting Zone By State – USA

Here is an overview of planting zones per state. Each state can have one or multiple USDA hardiness zones depending on the longitude and latitude of the state:

State	USDA Hardiness Zones
Alabama	Zones 7a to 8b
Alaska	Zones 1a to 7a
Arizona	Zones 4a to 10a
Arkansas	Zones 6a to 8b
California	Zones 5a to 11a
Colorado	Zones 3a to 7b
Connecticut	Zones 5a to 7b
Delaware	Zones 6a to 7b
Florida	Zones 8a to 11a
Georgia	Zones 7a to 9b
Hawaii	Zones 10a to 12b
Idaho	Zones 3a to 7b
Illinois	Zones 4a to 7b
Indiana	Zones 5a to 7b
Iowa	Zones 4a to 6b
Kansas	Zones 5a to 7a
Kentucky	Zones 6a to 7b
Louisiana	Zones 8a to 9a
Maine	Zones 3a to 6b
Maryland	Zones 6a to 7b
Massachusetts	Zones 5a to 7b
Michigan	Zones 3a to 6b
Minnesota	Zones 2a to 5b
Mississippi	Zones 7a to 9a
Missouri	Zones 5a to 7b
Montana	Zones 3a to 5b
Nebraska	Zones 4a to 6b
Nevada	Zones 4a to 9b
New Hampshire	Zones 3a to 6b
New Jersey	Zones 6a to 7b
New Mexico	Zones 5a to 8b
New York	Zones 3a to 7b
North Carolina	Zones 6a to 8b
North Dakota	Zones 2a to 5a
Ohio	Zones 5a to 6b
Oklahoma	Zones 6a to 8b
Oregon	Zones 4a to 9b
Pennsylvania	Zones 5a to 7b
Rhode Island	Zones 6a to 7b
South Carolina	Zones 7a to 9b
South Dakota	Zones 3a to 5a
Tennessee	Zones 6a to 7b
Texas	Zones 6a to 9b
Utah	Zones 4a to 7b
Vermont	Zones 3a to 5b
Virginia	Zones 5a to 8a
Washington	Zones 4a to 9b
West Virginia	Zones 5a to 7b
Wisconsin	Zones 3a to 5b
Wyoming	Zones 3a to 5a

Source: US Department of Agriculture

With this information, you can now answer the following questions with ease:

What is USDA Hardiness Zone 3?

USDA hardiness Zone 3 is between -40°F (-40°C) to -30°F (-34°C).

What are the Planting Zones for Texas?

The USDA hardiness zones for Texas are Zones 6a to 9b.

What Hardiness Zone is Florida?

Florida is in hardiness zones 8a to 11a.

I hope the Hardiness Zone By Zip Code tool is helpful. Let me know what you think!