What Growing Zone Is 51108?
Our records indicate the United States Department of Agriculture has given zip code 51108 a growing zone designation of 5a. 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 51108'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.
Latest Iowa growing zone mapIf you are looking for plants suitable for growing in zip code 51108, head on over to our page on plants that grow well in Sioux City, Iowa.

Hoeing Ain't Easy Garden Sign

Raised Garden Bed Kit

Fiskars Garden Harvest Basket

Fluffy Butt Hut Sign

Brass Decorative Faucet Handle
Latest Iowa 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 zip code 51108 is in growing zone 5a this means that plants there can survive temperatures as low as -20 to -15 degrees Fahrenheit. Plants for zip code 51108'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 zip code 51108 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 for zip code 51108.
The USDA hardiness zone is 5a for zip code 51108. This is sometimes also referred to as the growing or planting zone. These terms are used interchangeably.
51108's Growing Zone Details
USDA Growing Zone: 5a
Longitude: -96.34858
Latitude: 42.56625
Lowest Avg Temperatures (F): -20 to -15

Women's Panama Summer Hat

Heron with Prey Bronze Statue

Smart Hydroponic Growing System

Raised Garden Planter

Raised Garden Bed Kit
Map of the 51108 Area
All Towns In Iowa

Cluck Around Sign

Raised Garden Planter

Fiskars Garden Harvest Basket

Stainless Steel Garden Tool Set

Life Is Better w/ Chickens Sign
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.

Fluffy Butt Hut Sign

Self Watering Plant Pots

Shiitake Mushroom Kit

Unisex Summer Straw Hat

Cluck Around Sign
To see our latest gardening and homesteading projects, you can find us on Facebook, Instagram, and TikTok.
