What Growing Zone Is Fairfield?
Our records indicate the United States Department of Agriculture has given Fairfield a growing zone designation of 6a. Sometimes also called the planting or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Fairfield's climate based on the average extreme annual temperature.Our data is based on the latest 2023 USDA maps, which used Fairfield's weather data from 1991 - 2020 in their analysis.
Latest ID growing zone mapIf you are looking for plants suitable for growing in the Fairfield area, head on over to our page on plants that grow well in Fairfield, ID.

Brass Decorative Faucet Handle

Premium Garden Tool Gift Set

Life Is Better w/ Chickens Sign

Metal Arbor Trellis

Heavy Duty Garden Utility Wagon
Latest ID growing zone mapThe 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 Fairfield is in growing zone 6a this means that plants there can survive temperatures as low as -10 to -5 degrees Fahrenheit. Plants for Fairfield's climate should be chosen with this in mind, or plants should be moved inside to keep their core temperature in the right range if necessary.
Some zones may have been changed by the USDA as of 2023. To see if the Fairfield area has been affected, refer to this map of half zone changes from the 2012 version of the USDA zones to the 2023 version.
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!
Hardiness Zone FAQ
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 in Fairfield, ID.
The USDA hardiness zone is 6a for Fairfield. This is sometimes also referred to as the growing or planting zone. These terms are used interchangeably.
Fairfield's Growing Zone Details
USDA Growing Zone: 6a
Longitude: -114.8006
Latitude: 43.3489
Lowest Avg Temperatures (F): -10 to -5

Stainless Steel Garden Tool Set

Small Greenhouse Kit

Brass Decorative Faucet Handle

Cute Foldable Straw Bow Hat

Fluffy Butt Hut Sign
Map of the Fairfield Area
All Towns In ID

Premium Garden Tool Gift Set

Rustic Iron Garden Trellis

Brass Watering Can

Hoeing Ain't Easy Garden Sign

Self Watering Plant Pots
Plants For Other States
Looking for the best plants in a different area of the United States? Click on a button below to find plants that are ideal for that state's temperatures.

Brass Watering Can

Rustic Iron Garden Trellis

Are You Pooping? Sign

Cute Foldable Straw Bow Hat

Fiskars Garden Harvest Basket
To see our latest gardening and homesteading projects, you can find us on Facebook, Instagram, and TikTok.
