What Growing Zone Is Dennison?
Our records indicate the United States Department of Agriculture has given Dennison 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 Dennison's climate based on the average extreme annual temperature. .Our data is based on the latest 2023 USDA maps, which used Dennison's weather data from 1991 - 2020 in their analysis.
If you are looking for plants suitable for growing in the Dennison area, head on over to our page on plants that grow well in Dennison, MN.
Rustic Iron Garden Trellis
Sturdy trellis for supporting climbing plants and vines.
Hydroponic Garden Grow Kit
Grow fresh herbs and vegetables year-round with this indoor hydroponic garden system.
Metal Seed Storage Box
Organized storage solution for your seed collection.
Worm Composting Kit
Complete kit for starting your own worm composting system.
Fiskars Garden Harvest Basket
Sturdy basket for collecting and carrying your garden harvest.
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 Dennison is in growing zone 4b this means that plants there can survive temperatures as low as -25 to -20 degrees Fahrenheit. Plants for Dennison'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 Dennison 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!
Dennison's Growing Zone Details
USDA Growing Zone: 4b
Zip Codes: 55018
Longitude: -93.0303
Latitude: 44.4088
Lowest Avg Temperatures (F): -25 to -20
Hydroponic Garden Grow Kit
Grow fresh herbs and vegetables year-round with this indoor hydroponic garden system.
Metal Arbor Trellis
Decorative arbor trellis for climbing plants and garden entrance.
Steel Hori Hori Weeding Knife
Versatile Japanese-style gardening knife for weeding and planting.
Shiitake Mushroom Kit
Grow your own delicious shiitake mushrooms at home.
Self Watering Plant Pots
Innovative pots that maintain optimal moisture levels.
Map of the Dennison Area
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Self Watering Plant Pots
Innovative pots that maintain optimal moisture levels.
Metal Arbor Trellis
Decorative arbor trellis for climbing plants and garden entrance.
Fiskars Garden Harvest Basket
Sturdy basket for collecting and carrying your garden harvest.
Raised Garden Bed Kit
Easy-to-assemble raised garden bed for better soil control and drainage.
Cluck Around Sign
Whimsical sign for your chicken coop area.
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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Raised Garden Planter
Elevated planter for easy access and better drainage.
Rustic Iron Garden Trellis
Sturdy trellis for supporting climbing plants and vines.
Steel Hori Hori Weeding Knife
Versatile Japanese-style gardening knife for weeding and planting.
Stainless Steel Garden Tool Set
Complete garden tool set with heavy-duty stainless steel tools for all your gardening needs.
Deluxe Plastic Watering Can
High-capacity watering can with comfortable grip and precise spout.
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