What Growing Zone Is Lanark?
Our records indicate the United States Department of Agriculture has given Lanark 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 Lanark's climate based on the average extreme annual temperature.Our data is based on the latest 2023 USDA maps, which used Lanark's weather data from 1991 - 2020 in their analysis.
Latest IL growing zone mapIf you are looking for plants suitable for growing in the Lanark area, head on over to our page on plants that grow well in Lanark, IL.
Raised Garden Bed Kit
Easy-to-assemble raised garden bed for better soil control and drainage.
Hoeing Ain't Easy Garden Sign
Fun and decorative garden sign to add personality to your space.
Large Greenhouse Kit
Spacious greenhouse for extending your growing season.
Raised Garden Planter
Elevated planter for easy access and better drainage.
Wooden Chicken Coop
Spacious and secure home for your backyard chickens.
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 Lanark is in growing zone 5a this means that plants there can survive temperatures as low as -20 to -15 degrees Fahrenheit. Plants for Lanark'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 Lanark area has been affected, refer to this map of half zone changes from the 2012 version of the USDA zones to the 2023 version.
The 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 Lanark, IL.
The USDA hardiness zone is 5a for Lanark. This is sometimes also referred to as the growing or planting zone. These terms are used interchangeably.
Lanark's Growing Zone Details
USDA Growing Zone: 5a
Zip Codes: 61046
Longitude: -89.8336
Latitude: 42.1019
Lowest Avg Temperatures (F): -20 to -15
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.
Brass Decorative Faucet Handle
Elegant brass handle to enhance your garden faucet.
Stainless Steel Garden Tool Set
Complete garden tool set with heavy-duty stainless steel tools for all your gardening needs.
Wooden Chicken Coop
Spacious and secure home for your backyard chickens.
Map of the Lanark Area
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Seed Starting Trays
Perfect for starting seeds indoors before transplanting to your garden.
Steel Hori Hori Weeding Knife
Versatile Japanese-style gardening knife for weeding and planting.
Metal Seed Storage Box
Organized storage solution for your seed collection.
Metal Arbor Trellis
Decorative arbor trellis for climbing plants and garden entrance.
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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Hydroponic Garden Grow Kit
Grow fresh herbs and vegetables year-round with this indoor hydroponic garden system.
Cluck Around Sign
Whimsical sign for your chicken coop area.
Hoeing Ain't Easy Garden Sign
Fun and decorative garden sign to add personality to your space.
Metal Arbor Trellis
Decorative arbor trellis for climbing plants and garden entrance.
Worm Composting Kit
Complete kit for starting your own worm composting system.
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