What Growing Zone Is Keithsburg?

Our records indicate the United States Department of Agriculture has given Keithsburg a growing zone designation of 5b. Sometimes also called the planting or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Keithsburg's climate based on the average extreme annual temperature.Our data is based on the latest 2023 USDA maps, which used Keithsburg's weather data from 1991 - 2020 in their analysis.

map of growing zone 5bLatest IL growing zone map

If you are looking for plants suitable for growing in the Keithsburg area, head on over to our page on plants that grow well in Keithsburg, IL.

Metal Arbor Trellis

Metal Arbor Trellis

Decorative arbor trellis for climbing plants and garden entrance.
Steel Hori Hori Weeding Knife

Steel Hori Hori Weeding Knife

Versatile Japanese-style gardening knife for weeding and planting.
Brass Decorative Faucet Handle

Brass Decorative Faucet Handle

Elegant brass handle to enhance your garden faucet.
Wooden Chicken Coop

Wooden Chicken Coop

Spacious and secure home for your backyard chickens.
Rustic Iron Garden Trellis

Rustic Iron Garden Trellis

Sturdy trellis for supporting climbing plants and vines.
map of growing zone 5bLatest IL 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 Keithsburg is in growing zone 5b this means that plants there can survive temperatures as low as -15 to -10 degrees Fahrenheit. Plants for Keithsburg'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.

USDA growing zone map of the United States

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

map of usda hardiness zone changes from 2012 to 2023Half zone changes from 2012 to 2023

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 Keithsburg, IL.

The USDA hardiness zone is 5b for Keithsburg. This is sometimes also referred to as the growing or planting zone. These terms are used interchangeably.

Keithsburg's Growing Zone Details

USDA Growing Zone: 5b

Zip Codes: 61442

Longitude: -90.9353

Latitude: 41.1004

Lowest Avg Temperatures (F): -15 to -10

Hoeing Ain't Easy Garden Sign

Hoeing Ain't Easy Garden Sign

Fun and decorative garden sign to add personality to your space.
Worm Composting Kit

Worm Composting Kit

Complete kit for starting your own worm composting system.
Large Greenhouse Kit

Large Greenhouse Kit

Spacious greenhouse for extending your growing season.
Hydroponic Garden Grow Kit

Hydroponic Garden Grow Kit

Grow fresh herbs and vegetables year-round with this indoor hydroponic garden system.
Small Greenhouse Kit

Small Greenhouse Kit

Compact greenhouse perfect for small spaces.

Map of the Keithsburg Area

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Worm Composting Kit

Worm Composting Kit

Complete kit for starting your own worm composting system.
Small Greenhouse Kit

Small Greenhouse Kit

Compact greenhouse perfect for small spaces.
Metal Arbor Trellis

Metal Arbor Trellis

Decorative arbor trellis for climbing plants and garden entrance.
Brass Decorative Faucet Handle

Brass Decorative Faucet Handle

Elegant brass handle to enhance your garden faucet.
Steel Hori Hori Weeding Knife

Steel Hori Hori Weeding Knife

Versatile Japanese-style gardening knife for weeding and planting.

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.

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Cluck Around Sign

Cluck Around Sign

Whimsical sign for your chicken coop area.
Raised Garden Bed Kit

Raised Garden Bed Kit

Easy-to-assemble raised garden bed for better soil control and drainage.
Metal Seed Storage Box

Metal Seed Storage Box

Organized storage solution for your seed collection.
Reusable Grow Bags

Reusable Grow Bags

Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.
Hydroponic Garden Grow Kit

Hydroponic Garden Grow Kit

Grow fresh herbs and vegetables year-round with this indoor hydroponic garden system.

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