When to plant Swiss chard in Illinois
In spring, from Mar 1 – May 25 in Alton to Apr 15 – June 15 in Zion.
In fall, June 1 – Sept 10.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Addison | Apr 1 – June 15 | June 1 – Sept 10 |
| Algonquin | Apr 15 – June 15 | June 1 – Aug 1 |
| Alsip | Mar 15 – June 15 | June 1 – Sept 10 |
| Alton | Mar 1 – May 25 | June 1 – Sept 15 |
| Antioch | Apr 1 – June 15 | June 1 – Aug 1 |
| Arlington Heights | Apr 1 – June 15 | June 1 – Sept 10 |
| Aurora | Apr 1 – June 15 | June 1 – Aug 1 |
| Barrington | Apr 1 – June 15 | June 1 – Aug 1 |
| Bartlett | Apr 15 – June 15 | June 1 – July 20 |
| Batavia | Apr 1 – June 15 | June 1 – Aug 1 |
| Beach Park | Apr 15 – June 15 | June 1 – Aug 1 |
| Belleville | Mar 15 – June 15 | June 1 – Aug 1 |
| Bellwood | Apr 1 – June 15 | June 1 – Sept 10 |
| Belvidere | Apr 1 – June 15 | June 1 – Aug 1 |
| Bensenville | Apr 1 – June 15 | June 1 – Sept 10 |
| Berwyn | Mar 15 – June 15 | June 1 – Sept 10 |
| Bloomingdale | Apr 15 – June 15 | June 1 – July 20 |
| Bloomington | Apr 1 – June 15 | June 1 – Aug 1 |
| Blue Island | Mar 15 – June 15 | June 1 – Sept 10 |
| Bolingbrook | Apr 1 – June 15 | June 1 – Aug 1 |
| Bourbonnais | Apr 1 – June 15 | June 1 – Aug 1 |
| Bradley | Apr 1 – June 15 | June 1 – Aug 1 |
| Bridgeview | Mar 15 – June 15 | June 1 – Sept 10 |
| Brookfield | Mar 15 – June 15 | June 1 – Sept 10 |
| Buffalo Grove | Apr 1 – June 15 | June 1 – Sept 10 |
| Burbank | Mar 15 – June 15 | June 1 – Sept 10 |
| Burr Ridge | Apr 1 – June 15 | June 1 – Aug 1 |
| Cahokia Heights | Mar 15 – June 15 | June 1 – Sept 10 |
| Calumet City | Apr 1 – June 15 | June 1 – Aug 1 |
| Campton Hills | Apr 1 – June 15 | June 1 – Aug 1 |
| Canton | Apr 1 – June 15 | June 1 – Aug 1 |
| Carbondale | Mar 15 – June 15 | June 1 – Aug 1 |
| Carol Stream | Apr 1 – June 15 | June 1 – Aug 1 |
| Carpentersville | Apr 15 – June 15 | June 1 – Aug 1 |
| Cary | Apr 15 – June 15 | June 1 – July 20 |
| Centralia | Mar 15 – June 15 | June 1 – Aug 1 |
| Champaign | Mar 15 – June 15 | June 1 – Aug 1 |
| Channahon | Apr 1 – June 15 | June 1 – Sept 10 |
| Charleston | Mar 15 – June 15 | June 1 – Aug 1 |
| Chatham | Mar 15 – June 15 | June 1 – Aug 1 |
| Chicago | Mar 15 – June 15 | June 1 – Sept 15 |
| Chicago Heights | Apr 1 – June 15 | June 1 – Aug 1 |
| Chicago Ridge | Mar 15 – June 15 | June 1 – Sept 10 |
| Cicero | Mar 15 – June 15 | June 1 – Sept 10 |
| Collinsville | Mar 15 – June 15 | June 1 – Sept 10 |
| Columbia | Mar 15 – June 15 | June 1 – Sept 10 |
| Country Club Hills | Apr 1 – June 15 | June 1 – Aug 1 |
| Crest Hill | Apr 1 – June 15 | June 1 – Aug 1 |
| Crestwood | Mar 15 – June 15 | June 1 – Sept 10 |
| Crystal Lake | Apr 1 – June 15 | June 1 – Aug 1 |
| Danville | Apr 1 – June 15 | June 1 – Aug 1 |
| Darien | Apr 1 – June 15 | June 1 – Aug 1 |
| Decatur | Mar 15 – June 15 | June 1 – Aug 1 |
| Deerfield | Apr 15 – June 15 | June 1 – Aug 1 |
| DeKalb | Apr 1 – June 15 | June 1 – Aug 1 |
| Des Plaines | Apr 1 – June 15 | June 1 – Sept 10 |
| Dixon | Apr 1 – June 15 | June 1 – Aug 1 |
| Dolton | Apr 1 – June 15 | June 1 – Aug 1 |
| Downers Grove | Apr 15 – June 15 | June 1 – Aug 1 |
| East Moline | Apr 1 – June 15 | June 1 – Aug 1 |
| East Peoria | Apr 1 – June 15 | June 1 – Aug 1 |
| East St. Louis | Mar 15 – June 15 | June 1 – Sept 10 |
| Edwardsville | Mar 1 – May 25 | June 1 – Sept 15 |
| Effingham | Mar 15 – June 15 | June 1 – Aug 1 |
| Elgin | Apr 15 – June 15 | June 1 – Aug 1 |
| Elk Grove Village | Apr 1 – June 15 | June 1 – Sept 10 |
| Elmhurst | Apr 1 – June 15 | June 1 – Sept 10 |
| Elmwood Park | Apr 1 – June 15 | June 1 – Sept 10 |
| Evanston | Apr 15 – June 15 | June 1 – Aug 1 |
| Evergreen Park | Mar 15 – June 15 | June 1 – Sept 10 |
| Fairview Heights | Mar 15 – June 15 | June 1 – Sept 10 |
| Forest Park | Mar 15 – June 15 | June 1 – Sept 10 |
| Fox Lake | Apr 1 – June 15 | June 1 – Aug 1 |
| Frankfort | Apr 1 – June 15 | June 1 – Aug 1 |
| Franklin Park | Apr 1 – June 15 | June 1 – Sept 10 |
| Freeport | Apr 15 – June 15 | June 1 – July 20 |
| Galesburg | Apr 1 – June 15 | June 1 – Aug 1 |
| Geneva | Apr 1 – June 15 | June 1 – Aug 1 |
| Glen Carbon | Mar 1 – May 25 | June 1 – Sept 15 |
| Glen Ellyn | Apr 15 – June 15 | June 1 – Aug 1 |
| Glendale Heights | Apr 15 – June 15 | June 1 – Aug 1 |
| Glenview | Apr 15 – June 15 | June 1 – Aug 1 |
| Godfrey | Mar 1 – May 25 | June 1 – Sept 15 |
| Granite City | Mar 1 – May 25 | June 1 – Sept 15 |
| Grayslake | Apr 15 – June 15 | June 1 – Aug 1 |
| Gurnee | Apr 15 – June 15 | June 1 – Aug 1 |
| Hanover Park | Apr 15 – June 15 | June 1 – July 20 |
| Harvey | Apr 1 – June 15 | June 1 – Aug 1 |
| Hazel Crest | Apr 1 – June 15 | June 1 – Aug 1 |
| Herrin | Mar 15 – June 15 | June 1 – Aug 1 |
| Hickory Hills | Apr 1 – June 15 | June 1 – Aug 1 |
| Highland | Mar 15 – June 15 | June 1 – Aug 1 |
| Highland Park | Apr 15 – June 15 | June 1 – Aug 1 |
| Hinsdale | Apr 1 – June 15 | June 1 – Aug 1 |
| Hoffman Estates | Apr 15 – June 15 | June 1 – July 20 |
| Homer Glen | Apr 1 – June 15 | June 1 – Aug 1 |
| Homewood | Apr 1 – June 15 | June 1 – Aug 1 |
| Huntley | Apr 1 – June 15 | June 1 – Aug 1 |
| Jacksonville | Apr 1 – June 15 | June 1 – Aug 1 |
| Joliet | Apr 1 – June 15 | June 1 – Aug 1 |
| Justice | Mar 15 – June 15 | June 1 – Sept 10 |
| Kankakee | Apr 1 – June 15 | June 1 – Aug 1 |
| Kewanee | Apr 1 – June 15 | June 1 – Aug 1 |
| La Grange | Mar 15 – June 15 | June 1 – Sept 10 |
| La Grange Park | Mar 15 – June 15 | June 1 – Sept 10 |
| Lake Forest | Apr 15 – June 15 | June 1 – Aug 1 |
| Lake in the Hills | Apr 1 – June 15 | June 1 – Aug 1 |
| Lake Zurich | Apr 15 – June 15 | June 1 – Aug 1 |
| Lansing | Apr 1 – June 15 | June 1 – Aug 1 |
| Lemont | Apr 1 – June 15 | June 1 – Aug 1 |
| Libertyville | Apr 15 – June 15 | June 1 – Aug 1 |
| Lincoln | Apr 1 – June 15 | June 1 – Aug 1 |
| Lincolnwood | Apr 15 – June 15 | June 1 – Aug 1 |
| Lindenhurst | Apr 1 – June 15 | June 1 – Aug 1 |
| Lisle | Apr 15 – June 15 | June 1 – Aug 1 |
| Lockport | Apr 1 – June 15 | June 1 – Aug 1 |
| Lombard | Apr 15 – June 15 | June 1 – Aug 1 |
| Loves Park | Apr 1 – June 15 | June 1 – Aug 1 |
| Lyons | Mar 15 – June 15 | June 1 – Sept 10 |
| Machesney Park | Apr 15 – June 15 | June 1 – July 20 |
| Macomb | Apr 1 – June 15 | June 1 – Aug 1 |
| Mahomet | Apr 1 – June 15 | June 1 – July 20 |
| Manhattan | Apr 1 – June 15 | June 1 – Aug 1 |
| Marion | Mar 15 – June 15 | June 1 – Aug 1 |
| Markham | Apr 1 – June 15 | June 1 – Aug 1 |
| Matteson | Apr 1 – June 15 | June 1 – Aug 1 |
| Mattoon | Mar 15 – June 15 | June 1 – Sept 10 |
| Maywood | Mar 15 – June 15 | June 1 – Sept 10 |
| McHenry | Apr 15 – June 15 | June 1 – July 20 |
| Melrose Park | Apr 1 – June 15 | June 1 – Sept 10 |
| Midlothian | Mar 15 – June 15 | June 1 – Sept 10 |
| Minooka | Apr 1 – June 15 | June 1 – Sept 10 |
| Mokena | Apr 1 – June 15 | June 1 – Aug 1 |
| Moline | Apr 1 – June 15 | June 1 – Aug 1 |
| Montgomery | Apr 1 – June 15 | June 1 – Aug 1 |
| Morris | Apr 1 – June 15 | June 1 – Aug 1 |
| Morton | Apr 1 – June 15 | June 1 – Aug 1 |
| Morton Grove | Apr 15 – June 15 | June 1 – Aug 1 |
| Mount Prospect | Apr 1 – June 15 | June 1 – Sept 10 |
| Mount Vernon | Mar 15 – June 15 | June 1 – Aug 1 |
| Mundelein | Apr 15 – June 15 | June 1 – Aug 1 |
| Naperville | Apr 15 – June 15 | June 1 – Aug 1 |
| New Lenox | Apr 1 – June 15 | June 1 – Aug 1 |
| Niles | Apr 1 – June 15 | June 1 – Sept 10 |
| Normal | Apr 1 – June 15 | June 1 – Aug 1 |
| Norridge | Apr 1 – June 15 | June 1 – Sept 10 |
| North Aurora | Apr 1 – June 15 | June 1 – Aug 1 |
| North Chicago | Apr 15 – June 15 | June 1 – Aug 1 |
| Northbrook | Apr 15 – June 15 | June 1 – Aug 1 |
| Northlake | Apr 1 – June 15 | June 1 – Sept 10 |
| O'Fallon | Mar 15 – June 15 | June 1 – Aug 1 |
| Oak Forest | Apr 1 – June 15 | June 1 – Aug 1 |
| Oak Lawn | Mar 15 – June 15 | June 1 – Sept 10 |
| Oak Park | Mar 15 – June 15 | June 1 – Sept 10 |
| Orland Park | Apr 1 – June 15 | June 1 – Aug 1 |
| Oswego | Apr 1 – June 15 | June 1 – Aug 1 |
| Ottawa | Apr 15 – June 15 | June 1 – Aug 1 |
| Palatine | Apr 1 – June 15 | June 1 – Aug 1 |
| Palos Heights | Mar 15 – June 15 | June 1 – Sept 10 |
| Palos Hills | Apr 1 – June 15 | June 1 – Aug 1 |
| Park Forest | Apr 1 – June 15 | June 1 – Aug 1 |
| Park Ridge | Apr 1 – June 15 | June 1 – Sept 10 |
| Pekin | Apr 1 – June 15 | June 1 – Aug 1 |
| Peoria | Apr 1 – June 15 | June 1 – Aug 1 |
| Pingree Grove | Apr 15 – June 15 | June 1 – Aug 1 |
| Plainfield | Apr 1 – June 15 | June 1 – Aug 1 |
| Plano | Apr 15 – June 15 | June 1 – July 20 |
| Pontiac | Apr 1 – June 15 | June 1 – Aug 1 |
| Prospect Heights | Apr 1 – June 15 | June 1 – Sept 10 |
| Quincy | Mar 15 – June 15 | June 1 – Sept 10 |
| Rantoul | Apr 1 – June 15 | June 1 – Aug 1 |
| Richton Park | Apr 1 – June 15 | June 1 – Aug 1 |
| River Forest | Mar 15 – June 15 | June 1 – Sept 10 |
| River Grove | Apr 1 – June 15 | June 1 – Sept 10 |
| Riverdale | Mar 15 – June 15 | June 1 – Sept 10 |
| Rock Island | Apr 1 – June 15 | June 1 – Aug 1 |
| Rockford | Apr 1 – June 15 | June 1 – Aug 1 |
| Rolling Meadows | Apr 1 – June 15 | June 1 – Sept 10 |
| Romeoville | Apr 1 – June 15 | June 1 – Aug 1 |
| Roscoe | Apr 15 – June 15 | June 1 – July 20 |
| Roselle | Apr 15 – June 15 | June 1 – July 20 |
| Round Lake | Apr 15 – June 15 | June 1 – Aug 1 |
| Round Lake Beach | Apr 1 – June 15 | June 1 – Aug 1 |
| Schaumburg | Apr 15 – June 15 | June 1 – July 20 |
| Schiller Park | Apr 1 – June 15 | June 1 – Sept 10 |
| Shiloh | Mar 15 – June 15 | June 1 – Aug 1 |
| Shorewood | Apr 1 – June 15 | June 1 – Aug 1 |
| Skokie | Apr 15 – June 15 | June 1 – Aug 1 |
| South Elgin | Apr 15 – June 15 | June 1 – Aug 1 |
| South Holland | Apr 1 – June 15 | June 1 – Aug 1 |
| Springfield | Mar 15 – June 15 | June 1 – Aug 1 |
| St. Charles | Apr 1 – June 15 | June 1 – Aug 1 |
| Sterling | Apr 1 – June 15 | June 1 – Aug 1 |
| Streamwood | Apr 15 – June 15 | June 1 – July 20 |
| Streator | Mar 15 – June 15 | June 1 – Sept 10 |
| Summit | Mar 15 – June 15 | June 1 – Sept 10 |
| Swansea | Mar 15 – June 15 | June 1 – Aug 1 |
| Sycamore | Apr 1 – June 15 | June 1 – Aug 1 |
| Taylorville | Mar 15 – June 15 | June 1 – Aug 1 |
| Tinley Park | Apr 1 – June 15 | June 1 – Aug 1 |
| Troy | Mar 15 – June 15 | June 1 – Aug 1 |
| Urbana | Mar 15 – June 15 | June 1 – Aug 1 |
| Vernon Hills | Apr 15 – June 15 | June 1 – Aug 1 |
| Villa Park | Apr 15 – June 15 | June 1 – Aug 1 |
| Warrenville | Apr 15 – June 15 | June 1 – Aug 1 |
| Washington | Apr 1 – June 15 | June 1 – Aug 1 |
| Waterloo | Mar 15 – June 15 | June 1 – Sept 10 |
| Wauconda | Apr 15 – June 15 | June 1 – Aug 1 |
| Waukegan | Apr 15 – June 15 | June 1 – Aug 1 |
| West Chicago | Apr 1 – June 15 | June 1 – Aug 1 |
| Westchester | Mar 15 – June 15 | June 1 – Sept 10 |
| Western Springs | Apr 1 – June 15 | June 1 – Aug 1 |
| Westmont | Apr 15 – June 15 | June 1 – Aug 1 |
| Wheaton | Apr 15 – June 15 | June 1 – Aug 1 |
| Wheeling | Apr 1 – June 15 | June 1 – Sept 10 |
| Wilmette | Apr 15 – June 15 | June 1 – Aug 1 |
| Winfield | Apr 1 – June 15 | June 1 – Aug 1 |
| Winnetka | Apr 15 – June 15 | June 1 – Aug 1 |
| Wood Dale | Apr 1 – June 15 | June 1 – Sept 10 |
| Wood River | Mar 1 – May 25 | June 1 – Sept 15 |
| Woodridge | Apr 15 – June 15 | June 1 – Aug 1 |
| Woodstock | Apr 1 – June 15 | June 1 – Aug 1 |
| Worth | Mar 15 – June 15 | June 1 – Sept 10 |
| Yorkville | Apr 15 – June 15 | June 1 – July 20 |
| Zion | Apr 15 – June 15 | June 1 – Aug 1 |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for swiss chard.