What Growing Zone Is Willmar?
Our records indicate the United States Department of Agriculture has given Willmar a growing zone designation of 4b. Sometimes also called the planting or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Willmar's climate based on the average extreme annual temperature.Our data is based on the latest 2023 USDA maps, which used Willmar's weather data from 1991 - 2020 in their analysis.
Latest MN growing zone mapIf you are looking for plants suitable for growing in the Willmar area, head on over to our page on plants that grow well in Willmar, MN.
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Hydroponic Garden Grow Kit
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Rustic Iron Garden Trellis
Sturdy trellis for supporting climbing plants and vines.
Brass Decorative Faucet Handle
Elegant brass handle to enhance your garden faucet.
Metal Seed Storage Box
Organized storage solution for your seed collection.
Latest MN 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 Willmar is in growing zone 4b this means that plants there can survive temperatures as low as -25 to -20 degrees Fahrenheit. Plants for Willmar'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 Willmar area has been affected, refer to this map of half zone changes from the 2012 version of the USDA zones to the 2023 version.
Half zone changes from 2012 to 2023The 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 Willmar, MN.
The USDA hardiness zone is 4b for Willmar. This is sometimes also referred to as the growing or planting zone. These terms are used interchangeably.
Willmar's Growing Zone Details
USDA Growing Zone: 4b
Zip Codes: 56201
Longitude: -95.0569
Latitude: 45.1216
Lowest Avg Temperatures (F): -25 to -20
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Sturdy trellis for supporting climbing plants and vines.
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Versatile Japanese-style gardening knife for weeding and planting.
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Map of the Willmar Area
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Metal Arbor Trellis
Decorative arbor trellis for climbing plants and garden entrance.
Rustic Iron Garden Trellis
Sturdy trellis for supporting climbing plants and vines.
Stainless Steel Garden Tool Set
Complete garden tool set with heavy-duty stainless steel tools for all your gardening needs.
Brass Decorative Faucet Handle
Elegant brass handle to enhance your garden faucet.
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Steel Hori Hori Weeding Knife
Versatile Japanese-style gardening knife for weeding and planting.
Raised Garden Bed Kit
Easy-to-assemble raised garden bed for better soil control and drainage.
Brass Watering Can
Elegant brass watering can with classic design and durability.
Seed Starting Trays
Perfect for starting seeds indoors before transplanting to your garden.
Metal Arbor Trellis
Decorative arbor trellis for climbing plants and garden entrance.
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