What Growing Zone Is Hartford?
Our records indicate the United States Department of Agriculture has given Hartford a growing zone designation of 7a. Sometimes also called the planting or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Hartford's climate based on the average extreme annual temperature. .Our data is based on the latest 2023 USDA maps, which used Hartford's weather data from 1991 - 2020 in their analysis.
Latest IL growing zone mapIf you are looking for plants suitable for growing in the Hartford area, head on over to our page on plants that grow well in Hartford, IL.
Raised Garden Planter
Elevated planter for easy access and better drainage.
Steel Hori Hori Weeding Knife
Versatile Japanese-style gardening knife for weeding and planting.
Seed Starting Trays
Perfect for starting seeds indoors before transplanting to your garden.
Small Greenhouse Kit
Compact greenhouse perfect for small spaces.
Large Greenhouse Kit
Spacious greenhouse for extending your growing season.
Latest IL 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 Hartford is in growing zone 7a this means that plants there can survive temperatures as low as 0 to 5 degrees Fahrenheit. Plants for Hartford'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 Hartford 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!
Hartford's Growing Zone Details
USDA Growing Zone: 7a
Longitude: -90.0915
Latitude: 38.8183
Lowest Avg Temperatures (F): 0 to 5
Steel Hori Hori Weeding Knife
Versatile Japanese-style gardening knife for weeding and planting.
Brass Decorative Faucet Handle
Elegant brass handle to enhance your garden faucet.
Worm Composting Kit
Complete kit for starting your own worm composting system.
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.
Map of the Hartford Area
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Worm Composting Kit
Complete kit for starting your own worm composting system.
Small Greenhouse Kit
Compact greenhouse perfect for small spaces.
Deluxe Plastic Watering Can
High-capacity watering can with comfortable grip and precise spout.
Fiskars Garden Harvest Basket
Sturdy basket for collecting and carrying your garden harvest.
Reusable Grow Bags
Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.
Plants For Other States
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Shiitake Mushroom Kit
Grow your own delicious shiitake mushrooms at home.
Brass Decorative Faucet Handle
Elegant brass handle to enhance your garden faucet.
Raised Garden Planter
Elevated planter for easy access and better drainage.
Raised Garden Bed Kit
Easy-to-assemble raised garden bed for better soil control and drainage.
Self Watering Plant Pots
Innovative pots that maintain optimal moisture levels.
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