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APR 29, 2026
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Hardiness Reading · 22031

Zip 22031 · Virginia Fairfax, VA

Hardiness Zone 7b

What Growing Zone Is 22031?

Our records indicate the United States Department of Agriculture has given zip code 22031 a growing zone designation of 7b.

Hardiness Zone

7b

State

Virginia VA

Latitude

38.85954°

Longitude

-77.2599°

Winter Low (°F)

5 to 10

Best plants for Fairfax Plants for 22031 See all of Virginia

Sometimes also called the planting or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in zip code 22031's climate based on the average extreme annual temperature.

Our data is based on the latest 2023 USDA maps, which used weather data from 1991 - 2020 in their analysis.

I.

Virginia Hardiness Map

USDA 2023 plate
— Plate —VA · USDA hardiness
map of growing zone 7b
Latest Virginia growing zone map

If you are looking for plants suitable for growing in zip code 22031, head on over to our page on plants that grow well in Fairfax, Virginia.

You can also browse our list of recommended plants for zip code 22031 to find specific varieties suited to this hardiness zone.

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Show Fairfax's growing zone on my site

II.

What zone 7b means

In plain English
— Plate —VA · USDA hardiness
map of growing zone 7b
Latest Virginia growing zone map

The growing zone is a measure of the lowest temperature that a plant can survive based on average lowest year temperatures, helping you to decide what plants would grow best in your particular climate. Since zip code 22031 is in growing zone 7b this means that plants there can survive temperatures as low as 5 to 10 degrees Fahrenheit.

— Plate I —USDA Hardiness Zones · 2023
USDA growing zone map of the United States
After the United States Department of Agriculture, revised November 2023

Some zones may have been changed by the USDA as of 2023. To see if zip code 22031 has been affected, refer to this map of half zone changes from the 2012 version of the USDA zones to the 2023 version.

— Plate II —Half-zone changes · 2012 → 2023
map of usda hardiness zone changes from 2012 to 2023
Half-zone changes between the 2012 and 2023 USDA hardiness maps.

The updated map shows that over half of the Southeast has warmed by about half a zone. For gardeners, that means you can now grow plants that tolerate a bit more heat and less frost than before. The tan areas reflect this shift. Meanwhile, the white areas had slight temperature changes, but not enough to move them into a new zone. In the Western U.S., a few spots shifted cooler. That's not due to a colder climate, but because the new map uses a larger dataset, giving a more accurate picture of local conditions. It's important to keep track of these changes when planning your garden!

III.

Hardiness Zone FAQ

For the curious gardener

Have questions about hardiness zones and what they mean for your garden? Check out our FAQ below for quick answers to common questions about USDA hardiness zones and how they affect plant selection for zip code 22031.

№ 01What hardiness zone is 22031?+

The USDA hardiness zone is 7b for zip code 22031. This is sometimes also referred to as the growing or planting zone. These terms are used interchangeably.

№ 02What does growing zone 7b mean for 22031?+

Growing zone 7b means that plants in zip code 22031 can survive temperatures as low as 5 to 10 degrees Fahrenheit. This zone designation helps you choose plants that will thrive in your local climate conditions.

№ 03How do I use the growing zone information for 22031?+

Keep your growing zone of 7b in mind when choosing plants for 22031. The growing zone tells you the average low temperatures that occur each year in the area. If you select plants from zones other than 7b, then you may need to provide additional care during the coldest months of the year.

№ 04Has 22031's growing zone changed?+

The USDA updated their hardiness zone maps in 2023. As a result, 22031 may have experienced zone changes. Some areas of the Southeast warmed by half a zone, while areas of the Western United States had their zones lowered as a result of additional data becoming available.

№ 05What plants grow best in zone 7b?+

Visit our page on the best plants for Fairfax to see a full list of recommendations for the area.

№ 06Can I grow plants from other zones in 22031?+

While you can try plants from other zones, they may need winter protection or indoor shelter during cold spells. Focus on plants recommended for Fairfax's climate for the best results.

IV.

22031's Growing Zone Details

For the record

USDA Growing Zone: 7b

Zip Codes:
22031

Longitude: -77.2599

Latitude: 38.85954

Lowest Avg Temperatures (F): 5 to 10

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V.

Map of the 22031 Area

Live tile
— Map —Lat 38.85954, Lon -77.2599
Tile data © Google Maps
VI.

All Towns In Virginia

Browse the ledger

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VII.

Plants For Other States

Browse the rest

Looking for the best plants in a different area of the United States? Click on a state below to find plants that are ideal for that state's temperatures.

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