What Growing Zone Is Norwalk?
Our records indicate the United States Department of Agriculture has given Norwalk 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 Norwalk's climate based on the average extreme annual temperature. .Our data is based on the latest 2023 USDA maps, which used Norwalk's weather data from 1991 - 2020 in their analysis.
Latest IA growing zone mapIf you are looking for plants suitable for growing in the Norwalk area, head on over to our page on plants that grow well in Norwalk, IA.
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Latest IA 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 Norwalk is in growing zone 5b this means that plants there can survive temperatures as low as -15 to -10 degrees Fahrenheit. Plants for Norwalk'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 Norwalk 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!
Norwalk's Growing Zone Details
USDA Growing Zone: 5b
Longitude: -93.6913
Latitude: 41.4895
Lowest Avg Temperatures (F): -15 to -10
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Elegant brass handle to enhance your garden faucet.
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Map of the Norwalk Area
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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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Brass Watering Can
Elegant brass watering can with classic design and durability.
Reusable Grow Bags
Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.
Shiitake Mushroom Kit
Grow your own delicious shiitake mushrooms at home.
Stainless Steel Garden Tool Set
Complete garden tool set with heavy-duty stainless steel tools for all your gardening needs.
Rustic Iron Garden Trellis
Sturdy trellis for supporting climbing plants and vines.
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