Illinois Plant Hardiness Zones

Hardiness Zones, also referred to as Growing Zones or Planting zones are defined by the U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS). The zones in this map were created in 2023 using mean extreme climate data covering the period of 1991 to 2020. The previous version of this map released in 2012 was created using climate data from the period of 1976-2005. The data in the 2012 maps covered a cooler period than the 2023 maps.

Map Cities Related

Illinois Hardiness Zones Map - 2023

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List of Hardiness Zones for Locations in Illinois

Location2023 Hardiness Zone2012 Hardiness Zone1990 Hardiness Zone
Addison6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Algonquin5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Alsip6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Alton7a - 0°F to 5°F 6b - -5°F to 0°F6a - -10°F to -5°F
Arlington Heights6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Aurora5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Bartlett5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Batavia5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Belleville7a - 0°F to 5°F 6b - -5°F to 0°F6a - -10°F to -5°F
Bellwood6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Belvidere5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Bensenville6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Berwyn6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Bloomingdale5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Bloomington6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Blue Island6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Bolingbrook6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Bourbonnais5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Bradley5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Bridgeview6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Brookfield6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Burbank6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Calumet City6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Carbondale7a - 0°F to 5°F 6b - -5°F to 0°F6a - -10°F to -5°F
Carol Stream5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Carpentersville5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Cary5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Champaign6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Charleston6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Chicago6b - -5°F to 0°F 6a - -10°F to -5°F5b - -15°F to -10°F
Chicago Heights6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Cicero6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Collinsville7a - 0°F to 5°F 6b - -5°F to 0°F6a - -10°F to -5°F
Country Club Hills6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Crest Hill6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Crystal Lake5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Danville6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Darien6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Darien6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Decatur6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Deerfield6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
DeKalb5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Des Plaines6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Dixon5b - -15°F to -10°F 5a - -20°F to -15°F5a - -20°F to -15°F
Dolton6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Downers Grove6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
East Moline5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
East Peoria6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Edwardsville7a - 0°F to 5°F 6a - -10°F to -5°F6a - -10°F to -5°F
Elgin5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Elk Grove Village6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Elmhurst6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Elmwood Park6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Evanston6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Evergreen Park6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Fairview Heights7a - 0°F to 5°F 6b - -5°F to 0°F6a - -10°F to -5°F
Frankfort6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Franklin Park6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Freeport5b - -15°F to -10°F 5a - -20°F to -15°F5a - -20°F to -15°F
Galesburg5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Geneva5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Glen Ellyn6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Glendale Heights5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Glenview6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Godfrey6b - -5°F to 0°F 6a - -10°F to -5°F5b - -15°F to -10°F
Granite City7a - 0°F to 5°F 6b - -5°F to 0°F6a - -10°F to -5°F
Grayslake5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Gurnee6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Hanover Park5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Harvey6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Highland Park6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Hinsdale6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Hoffman Estates5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Homer Glen6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Homewood6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Huntley5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Jacksonville6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Joliet6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Kankakee5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
La Grange6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Lake Forest6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Lake in the Hills5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Lake Zurich5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Lansing6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Lemont6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Libertyville6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Lisle6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Lockport6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Lombard6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Loves Park5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Machesney Park5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Macomb6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Marion7a - 0°F to 5°F 6b - -5°F to 0°F6a - -10°F to -5°F
Matteson6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Mattoon6b - -5°F to 0°F 6a - -10°F to -5°F5b - -15°F to -10°F
Maywood6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
McHenry5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Melrose Park6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Mokena6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Moline5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Montgomery5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Morton6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Morton Grove6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Mount Prospect6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Mundelein5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Naperville5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
New Lenox6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Niles6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Normal6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Norridge6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
North Aurora5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
North Chicago6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Northbrook6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
O'Fallon7a - 0°F to 5°F 6b - -5°F to 0°F6a - -10°F to -5°F
Oak Forest6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Oak Lawn6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Oak Park6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Orland Park6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Oswego5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Ottawa5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Palatine5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Palos Hills6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Park Forest6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Park Ridge6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Pekin6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Peoria6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Plainfield5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Prospect Heights6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Quincy6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Rock Island5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Rockford5b - -15°F to -10°F 5b - -15°F to -10°F4b - -25°F to -20°F
Rolling Meadows6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Romeoville6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Roselle5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Round Lake5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Round Lake Beach5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Schaumburg5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Shorewood5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Skokie6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
South Elgin5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
South Holland6a - -10°F to -5°F 6a - -10°F to -5°F5b - -15°F to -10°F
Springfield6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Streamwood5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Sycamore5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Tinley Park6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Urbana6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Vernon Hills6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Villa Park6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Washington6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Waukegan6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
West Chicago5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Westchester6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Westmont6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Wheaton5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Wheeling6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Wilmette6a - -10°F to -5°F 5b - -15°F to -10°F5b - -15°F to -10°F
Woodridge6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F
Woodstock5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Yorkville5b - -15°F to -10°F 5b - -15°F to -10°F5a - -20°F to -15°F
Zion6a - -10°F to -5°F 5b - -15°F to -10°F5a - -20°F to -15°F

Hardiness Zone Maps for Neighboring States

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