Harristown's Hardiness Zone

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Our records indicate the United States Department of Agriculture has given Harristown a 2023 growing zone designation of 6a. Sometimes also called the planting zone or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Harristown's climate. If you are looking for plants suitable for growing in the Harristown area, head on over to our page on plants that grow well in Harristown, IL.

Understanding your growing zone is very important because it is a measure of the lowest temperature that a plant can survive, helping you to decide what plants would grow best in your particular climate. Since Harristown is in growing zone 6a this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for Harristown'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.

2023 USDA Growing Zone: 6a

Zip Codes: 62522, 62537

Longitude: -89.0608

Latitude: 39.8429

Lowest Avg Temperatures (F): -10 to -5