What Growing Zone Is Dahlgren?
Our records indicate the United States Department of Agriculture has given Dahlgren a growing zone designation of 6b. Sometimes also called the planting or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Dahlgren's climate based on the average extreme annual temperature.Our data is based on the latest 2023 USDA maps, which used Dahlgren's weather data from 1991 - 2020 in their analysis.
Latest IL growing zone mapIf you are looking for plants suitable for growing in the Dahlgren area, head on over to our page on plants that grow well in Dahlgren, IL.
Large Greenhouse Kit
Spacious greenhouse for extending your growing season.
Stainless Steel Garden Tool Set
Complete garden tool set with heavy-duty stainless steel tools for all your gardening needs.
Shiitake Mushroom Kit
Grow your own delicious shiitake mushrooms at home.
Hoeing Ain't Easy Garden Sign
Fun and decorative garden sign to add personality to your space.
Wooden Chicken Coop
Spacious and secure home for your backyard chickens.
Latest IL 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 Dahlgren is in growing zone 6b this means that plants there can survive temperatures as low as -5 to 0 degrees Fahrenheit. Plants for Dahlgren'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 Dahlgren 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 Dahlgren, IL.
The USDA hardiness zone is 6b for Dahlgren. This is sometimes also referred to as the growing or planting zone. These terms are used interchangeably.
Dahlgren's Growing Zone Details
USDA Growing Zone: 6b
Zip Codes:
Longitude: -88.6847
Latitude: 38.198
Lowest Avg Temperatures (F): -5 to 0
Japanese Pagoda Garden Statue
Add a touch of feng shui to the garden with this popular pagoda statue.
Brass Decorative Faucet Handle
Elegant brass handle to enhance your garden faucet.
Metal Arbor Trellis
Decorative arbor trellis for climbing plants and garden entrance.
Deluxe Plastic Watering Can
High-capacity watering can with comfortable grip and precise spout.
Women's Panama Summer Hat
This women's Panama hat was a hit at my family Christmas last year.
Map of the Dahlgren Area
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Fiskars Garden Harvest Basket
Sturdy basket for collecting and carrying your garden harvest.
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Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.
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The wide brim on this premium unisex straw hat offers the best protection from the sun.
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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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Rustic Iron Garden Trellis
Sturdy trellis for supporting climbing plants and vines.
Raised Garden Bed Kit
Easy-to-assemble raised garden bed for better soil control and drainage.
Are You Pooping? Sign
Funny cow sign, great for gardeners and farmers.
Reusable Grow Bags
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Smart Hydroponic Growing System
An easy to use hydroponic system that you can manage from your phone.
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