What Growing Zone Is Charles City?
Our records indicate the United States Department of Agriculture has given Charles City a growing zone designation of 5a. Sometimes also called the planting or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Charles City's climate based on the average extreme annual temperature. .Our data is based on the latest 2023 USDA maps, which used Charles City's weather data from 1991 - 2020 in their analysis.
If you are looking for plants suitable for growing in the Charles City area, head on over to our page on plants that grow well in Charles City, IA.
Shiitake Mushroom Kit
Grow your own delicious shiitake mushrooms at home.
Rustic Iron Garden Trellis
Sturdy trellis for supporting climbing plants and vines.
Self Watering Plant Pots
Innovative pots that maintain optimal moisture levels.
Cluck Around Sign
Whimsical sign for your chicken coop area.
Large Greenhouse Kit
Spacious greenhouse for extending your growing season.
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 Charles City is in growing zone 5a this means that plants there can survive temperatures as low as -20 to -15 degrees Fahrenheit. Plants for Charles 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 Charles 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!
Charles City's Growing Zone Details
USDA Growing Zone: 5a
Zip Codes: 50616
Longitude: -92.6745
Latitude: 43.0646
Lowest Avg Temperatures (F): -20 to -15
Deluxe Plastic Watering Can
High-capacity watering can with comfortable grip and precise spout.
Wooden Chicken Coop
Spacious and secure home for your backyard chickens.
Stainless Steel Garden Tool Set
Complete garden tool set with heavy-duty stainless steel tools for all your gardening needs.
Hoeing Ain't Easy Garden Sign
Fun and decorative garden sign to add personality to your space.
Cluck Around Sign
Whimsical sign for your chicken coop area.
Map of the Charles City Area
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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.
Seed Starting Trays
Perfect for starting seeds indoors before transplanting to your garden.
Rustic Iron Garden Trellis
Sturdy trellis for supporting climbing plants and vines.
Self Watering Plant Pots
Innovative pots that maintain optimal moisture levels.
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.
Cluck Around Sign
Whimsical sign for your chicken coop area.
Seed Starting Trays
Perfect for starting seeds indoors before transplanting to your garden.
Deluxe Plastic Watering Can
High-capacity watering can with comfortable grip and precise spout.
Worm Composting Kit
Complete kit for starting your own worm composting system.
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