What Growing Zone Is Decatur City?
Our records indicate the United States Department of Agriculture has given Decatur City 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 Decatur City's climate based on the average extreme annual temperature.Our data is based on the latest 2023 USDA maps, which used Decatur City's weather data from 1991 - 2020 in their analysis.
Latest IA growing zone mapIf you are looking for plants suitable for growing in the Decatur City area, head on over to our page on plants that grow well in Decatur City, IA.
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High-capacity watering can with comfortable grip and precise spout.
Stainless Steel Garden Tool Set
Complete garden tool set with heavy-duty stainless steel tools for all your gardening needs.
Brass Watering Can
Elegant brass watering can with classic design and durability.
Brass Decorative Faucet Handle
Elegant brass handle to enhance your garden faucet.
Fiskars Garden Harvest Basket
Sturdy basket for collecting and carrying your garden harvest.
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 Decatur City is in growing zone 5b this means that plants there can survive temperatures as low as -15 to -10 degrees Fahrenheit. Plants for Decatur City'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 Decatur City 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 Decatur City, IA.
The USDA hardiness zone is 5b for Decatur City. This is sometimes also referred to as the growing or planting zone. These terms are used interchangeably.
Decatur City's Growing Zone Details
USDA Growing Zone: 5b
Zip Codes: 50067
Longitude: -93.8327
Latitude: 40.7427
Lowest Avg Temperatures (F): -15 to -10
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Versatile Japanese-style gardening knife for weeding and planting.
Large Greenhouse Kit
Spacious greenhouse for extending your growing season.
Reusable Grow Bags
Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.
Metal Arbor Trellis
Decorative arbor trellis for climbing plants and garden entrance.
Wooden Chicken Coop
Spacious and secure home for your backyard chickens.
Map of the Decatur City Area
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Large Greenhouse Kit
Spacious greenhouse for extending your growing season.
Reusable Grow Bags
Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.
Fiskars Garden Harvest Basket
Sturdy basket for collecting and carrying your garden harvest.
Deluxe Plastic Watering Can
High-capacity watering can with comfortable grip and precise spout.
Raised Garden Bed Kit
Easy-to-assemble raised garden bed for better soil control and drainage.
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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Stainless Steel Garden Tool Set
Complete garden tool set with heavy-duty stainless steel tools for all your gardening needs.
Large Greenhouse Kit
Spacious greenhouse for extending your growing season.
Small Greenhouse Kit
Compact greenhouse perfect for small spaces.
Cluck Around Sign
Whimsical sign for your chicken coop area.
Wooden Chicken Coop
Spacious and secure home for your backyard chickens.
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