When to plant radishes in Illinois
Sow outdoors in Chicago
Mar 6–Apr 17
Across Illinois the window opens between February 28 and March 27. Find your city below; the dates follow each town's own average last frost.
- Sow outdoors, Chicago
- Mar 6–Apr 17
- Fall planting, Chicago
- Sep 24–Oct 8
- Last frost, Chicago
- Apr 10
Sow outdoors from 5 weeks before to 1 weeks after the last frost; sow again for fall 4–6 weeks before the first frost. The fastest crop in the garden. Sow a short row every week in spring and fall.
Radishes planting dates by city
Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
ChicagoMar 6–Apr 17
AuroraMar 15–Apr 26
NapervilleMar 24–May 5
JolietMar 15–Apr 26
RockfordMar 20–May 1
ElginMar 22–May 3
SpringfieldMar 11–Apr 22
PeoriaMar 12–Apr 23
ChampaignMar 11–Apr 22
WaukeganMar 26–May 7
CiceroMar 7–Apr 18
BloomingtonMar 21–May 2
SchaumburgMar 26–May 7
EvanstonMar 22–May 3
Arlington HeightsMar 15–Apr 26
BolingbrookMar 16–Apr 27
DecaturMar 10–Apr 21
SkokieMar 22–May 3
PalatineMar 21–May 2
Des PlainesMar 12–Apr 23
Orland ParkMar 15–Apr 26
Oak LawnMar 6–Apr 17
Mount ProspectMar 15–Apr 26
Tinley ParkMar 19–Apr 30
BerwynMar 7–Apr 18
WheatonMar 24–May 5
NormalMar 21–May 2
Oak ParkMar 7–Apr 18
Hoffman EstatesMar 26–May 7
Downers GroveMar 24–May 5
All 121 cities
| City | Sow outdoors | Fall planting | Last frost |
|---|---|---|---|
| Chicago | Mar 6 to Apr 17 | Sep 24 to Oct 8 | Apr 10 |
| Aurora | Mar 15 to Apr 26 | Sep 11 to Sep 25 | Apr 19 |
| Naperville | Mar 24 to May 5 | Sep 4 to Sep 18 | Apr 28 |
| Joliet | Mar 15 to Apr 26 | Sep 13 to Sep 27 | Apr 19 |
| Rockford | Mar 20 to May 1 | Sep 5 to Sep 19 | Apr 24 |
| Elgin | Mar 22 to May 3 | Sep 6 to Sep 20 | Apr 26 |
| Springfield | Mar 11 to Apr 22 | Sep 10 to Sep 24 | Apr 15 |
| Peoria | Mar 12 to Apr 23 | Sep 11 to Sep 25 | Apr 16 |
| Champaign | Mar 11 to Apr 22 | Sep 12 to Sep 26 | Apr 15 |
| Waukegan | Mar 26 to May 7 | Sep 7 to Sep 21 | Apr 30 |
| Cicero | Mar 7 to Apr 18 | Sep 19 to Oct 3 | Apr 11 |
| Bloomington | Mar 21 to May 2 | Sep 4 to Sep 18 | Apr 25 |
| Schaumburg | Mar 26 to May 7 | Sep 1 to Sep 15 | Apr 30 |
| Evanston | Mar 22 to May 3 | Sep 9 to Sep 23 | Apr 26 |
| Arlington Heights | Mar 15 to Apr 26 | Sep 14 to Sep 28 | Apr 19 |
| Bolingbrook | Mar 16 to Apr 27 | Sep 10 to Sep 24 | Apr 20 |
| Decatur | Mar 10 to Apr 21 | Sep 12 to Sep 26 | Apr 14 |
| Skokie | Mar 22 to May 3 | Sep 9 to Sep 23 | Apr 26 |
| Palatine | Mar 21 to May 2 | Sep 7 to Sep 21 | Apr 25 |
| Des Plaines | Mar 12 to Apr 23 | Sep 16 to Sep 30 | Apr 16 |
| Orland Park | Mar 15 to Apr 26 | Sep 10 to Sep 24 | Apr 19 |
| Oak Lawn | Mar 6 to Apr 17 | Sep 20 to Oct 4 | Apr 10 |
| Mount Prospect | Mar 15 to Apr 26 | Sep 14 to Sep 28 | Apr 19 |
| Tinley Park | Mar 19 to Apr 30 | Sep 8 to Sep 22 | Apr 23 |
| Berwyn | Mar 7 to Apr 18 | Sep 19 to Oct 3 | Apr 11 |
| Wheaton | Mar 24 to May 5 | Sep 4 to Sep 18 | Apr 28 |
| Normal | Mar 21 to May 2 | Sep 4 to Sep 18 | Apr 25 |
| Oak Park | Mar 7 to Apr 18 | Sep 19 to Oct 3 | Apr 11 |
| Hoffman Estates | Mar 26 to May 7 | Sep 1 to Sep 15 | Apr 30 |
| Downers Grove | Mar 24 to May 5 | Sep 4 to Sep 18 | Apr 28 |
| Plainfield | Mar 16 to Apr 27 | Sep 10 to Sep 24 | Apr 20 |
| Glenview | Mar 22 to May 3 | Sep 9 to Sep 23 | Apr 26 |
| Elmhurst | Mar 12 to Apr 23 | Sep 16 to Sep 30 | Apr 16 |
| Lombard | Mar 24 to May 5 | Sep 4 to Sep 18 | Apr 28 |
| Buffalo Grove | Mar 15 to Apr 26 | Sep 14 to Sep 28 | Apr 19 |
| Moline | Mar 20 to May 1 | Sep 6 to Sep 20 | Apr 24 |
| Crystal Lake | Mar 21 to May 2 | Sep 10 to Sep 24 | Apr 25 |
| Romeoville | Mar 16 to Apr 27 | Sep 10 to Sep 24 | Apr 20 |
| Bartlett | Mar 26 to May 7 | Sep 1 to Sep 15 | Apr 30 |
| DeKalb | Mar 20 to May 1 | Sep 6 to Sep 20 | Apr 24 |
| Belleville | Mar 8 to Apr 19 | Sep 8 to Sep 22 | Apr 12 |
| Oswego | Mar 15 to Apr 26 | Sep 11 to Sep 25 | Apr 19 |
| Urbana | Mar 11 to Apr 22 | Sep 12 to Sep 26 | Apr 15 |
| Carol Stream | Mar 21 to May 2 | Sep 7 to Sep 21 | Apr 25 |
| Quincy | Mar 4 to Apr 15 | Sep 18 to Oct 2 | Apr 8 |
| Park Ridge | Mar 12 to Apr 23 | Sep 16 to Sep 30 | Apr 16 |
| Wheeling | Mar 15 to Apr 26 | Sep 14 to Sep 28 | Apr 19 |
| Streamwood | Mar 26 to May 7 | Sep 1 to Sep 15 | Apr 30 |
| Carpentersville | Mar 22 to May 3 | Sep 6 to Sep 20 | Apr 26 |
| Hanover Park | Mar 26 to May 7 | Sep 1 to Sep 15 | Apr 30 |
| Rock Island | Mar 20 to May 1 | Sep 6 to Sep 20 | Apr 24 |
| Addison | Mar 12 to Apr 23 | Sep 16 to Sep 30 | Apr 16 |
| Calumet City | Mar 19 to Apr 30 | Sep 8 to Sep 22 | Apr 23 |
| Northbrook | Mar 22 to May 3 | Sep 9 to Sep 23 | Apr 26 |
| North Chicago | Mar 26 to May 7 | Sep 7 to Sep 21 | Apr 30 |
| Woodridge | Mar 24 to May 5 | Sep 4 to Sep 18 | Apr 28 |
| St. Charles | Mar 21 to May 2 | Sep 7 to Sep 21 | Apr 25 |
| Mundelein | Mar 25 to May 6 | Sep 8 to Sep 22 | Apr 29 |
| O'Fallon | Mar 8 to Apr 19 | Sep 8 to Sep 22 | Apr 12 |
| Glendale Heights | Mar 24 to May 5 | Sep 4 to Sep 18 | Apr 28 |
| Elk Grove Village | Mar 12 to Apr 23 | Sep 16 to Sep 30 | Apr 16 |
| Pekin | Mar 12 to Apr 23 | Sep 11 to Sep 25 | Apr 16 |
| Algonquin | Mar 22 to May 3 | Sep 6 to Sep 20 | Apr 26 |
| Highland Park | Mar 22 to May 3 | Sep 9 to Sep 23 | Apr 26 |
| Gurnee | Mar 26 to May 7 | Sep 7 to Sep 21 | Apr 30 |
| Niles | Mar 12 to Apr 23 | Sep 16 to Sep 30 | Apr 16 |
| McHenry | Mar 27 to May 8 | Aug 30 to Sep 13 | May 1 |
| Huntley | Mar 21 to May 2 | Sep 10 to Sep 24 | Apr 25 |
| New Lenox | Mar 15 to Apr 26 | Sep 13 to Sep 27 | Apr 19 |
| Glen Ellyn | Mar 24 to May 5 | Sep 4 to Sep 18 | Apr 28 |
| Lake in the Hills | Mar 21 to May 2 | Sep 10 to Sep 24 | Apr 25 |
| Galesburg | Mar 16 to Apr 27 | Sep 7 to Sep 21 | Apr 20 |
| Burbank | Mar 6 to Apr 17 | Sep 20 to Oct 4 | Apr 10 |
| Danville | Mar 17 to Apr 28 | Sep 8 to Sep 22 | Apr 21 |
| Lansing | Mar 19 to Apr 30 | Sep 8 to Sep 22 | Apr 23 |
| Lockport | Mar 16 to Apr 27 | Sep 10 to Sep 24 | Apr 20 |
| Wilmette | Mar 22 to May 3 | Sep 9 to Sep 23 | Apr 26 |
| Round Lake Beach | Mar 20 to May 1 | Sep 11 to Sep 25 | Apr 24 |
| Vernon Hills | Mar 25 to May 6 | Sep 8 to Sep 22 | Apr 29 |
| Granite City | Feb 28 to Apr 11 | Sep 24 to Oct 8 | Apr 4 |
| Oak Forest | Mar 19 to Apr 30 | Sep 8 to Sep 22 | Apr 23 |
| Yorkville | Mar 24 to May 5 | Sep 1 to Sep 15 | Apr 28 |
| Batavia | Mar 15 to Apr 26 | Sep 11 to Sep 25 | Apr 19 |
| Chicago Heights | Mar 19 to Apr 30 | Sep 8 to Sep 22 | Apr 23 |
| Edwardsville | Feb 28 to Apr 11 | Sep 24 to Oct 8 | Apr 4 |
| Woodstock | Mar 21 to May 2 | Sep 10 to Sep 24 | Apr 25 |
| South Elgin | Mar 22 to May 3 | Sep 6 to Sep 20 | Apr 26 |
| Belvidere | Mar 20 to May 1 | Sep 5 to Sep 19 | Apr 24 |
| West Chicago | Mar 21 to May 2 | Sep 7 to Sep 21 | Apr 25 |
| Alton | Feb 28 to Apr 11 | Sep 24 to Oct 8 | Apr 4 |
| Homer Glen | Mar 16 to Apr 27 | Sep 10 to Sep 24 | Apr 20 |
| Morton Grove | Mar 22 to May 3 | Sep 9 to Sep 23 | Apr 26 |
| Zion | Mar 26 to May 7 | Sep 9 to Sep 23 | Apr 30 |
| Westmont | Mar 24 to May 5 | Sep 4 to Sep 18 | Apr 28 |
| Melrose Park | Mar 12 to Apr 23 | Sep 16 to Sep 30 | Apr 16 |
| Collinsville | Mar 4 to Apr 15 | Sep 14 to Sep 28 | Apr 8 |
| Loves Park | Mar 20 to May 1 | Sep 5 to Sep 19 | Apr 24 |
| Rolling Meadows | Mar 15 to Apr 26 | Sep 14 to Sep 28 | Apr 19 |
| Elmwood Park | Mar 12 to Apr 23 | Sep 16 to Sep 30 | Apr 16 |
| Lisle | Mar 24 to May 5 | Sep 4 to Sep 18 | Apr 28 |
| Kankakee | Mar 15 to Apr 26 | Sep 12 to Sep 26 | Apr 19 |
| Maywood | Mar 7 to Apr 18 | Sep 19 to Oct 3 | Apr 11 |
| Freeport | Mar 22 to May 3 | Sep 1 to Sep 15 | Apr 26 |
| Machesney Park | Mar 27 to May 8 | Aug 31 to Sep 14 | May 1 |
| Roselle | Mar 26 to May 7 | Sep 1 to Sep 15 | Apr 30 |
| Bloomingdale | Mar 26 to May 7 | Sep 1 to Sep 15 | Apr 30 |
| East Peoria | Mar 12 to Apr 23 | Sep 11 to Sep 25 | Apr 16 |
| Darien | Mar 15 to Apr 26 | Sep 10 to Sep 24 | Apr 19 |
| Montgomery | Mar 15 to Apr 26 | Sep 11 to Sep 25 | Apr 19 |
| Villa Park | Mar 24 to May 5 | Sep 4 to Sep 18 | Apr 28 |
| Carbondale | Mar 5 to Apr 16 | Sep 10 to Sep 24 | Apr 9 |
| Blue Island | Mar 6 to Apr 17 | Sep 20 to Oct 4 | Apr 10 |
| Frankfort | Mar 19 to Apr 30 | Sep 8 to Sep 22 | Apr 23 |
| Grayslake | Mar 25 to May 6 | Sep 8 to Sep 22 | Apr 29 |
| Geneva | Mar 21 to May 2 | Sep 7 to Sep 21 | Apr 25 |
| Park Forest | Mar 19 to Apr 30 | Sep 8 to Sep 22 | Apr 23 |
| South Holland | Mar 19 to Apr 30 | Sep 8 to Sep 22 | Apr 23 |
| Libertyville | Mar 25 to May 6 | Sep 8 to Sep 22 | Apr 29 |
| Crest Hill | Mar 16 to Apr 27 | Sep 10 to Sep 24 | Apr 20 |
| Dolton | Mar 19 to Apr 30 | Sep 8 to Sep 22 | Apr 23 |
| East Moline | Mar 12 to Apr 23 | Sep 13 to Sep 27 | Apr 16 |
Questions
When should I plant radishes in Illinois?
In Chicago, sow outdoors from March 6 to April 17. Across Illinois the window opens between February 28 and March 27, depending on the local last frost.
How is this date worked out?
Sow outdoors from 5 weeks before to 1 weeks after the last frost; sow again for fall 4–6 weeks before the first frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.
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