When to plant Radishes in Wisconsin
In spring, from Mar 10 – May 10 in Caledonia to Apr 1 – June 1 in Wisconsin Rapids.
In fall, from July 1 – Sept 1 in Baraboo to Aug 15 – Oct 15 in South Milwaukee.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Allouez | Mar 20 – May 10 | July 15 – Sept 15 |
| Appleton | Mar 20 – May 10 | July 15 – Sept 15 |
| Ashwaubenon | Mar 20 – May 10 | July 15 – Sept 15 |
| Baraboo | Mar 20 – May 10 | July 1 – Sept 1 |
| Beaver Dam | Mar 20 – May 10 | July 15 – Sept 15 |
| Bellevue | Mar 20 – May 10 | July 15 – Sept 15 |
| Beloit | Mar 20 – May 10 | July 15 – Sept 15 |
| Brookfield | Mar 20 – May 10 | July 15 – Sept 15 |
| Brown Deer | Mar 20 – May 10 | Aug 1 – Oct 1 |
| Burlington | Mar 20 – May 10 | July 15 – Sept 15 |
| Caledonia | Mar 10 – May 10 | Aug 1 – Oct 1 |
| Cedarburg | Mar 10 – May 10 | Aug 1 – Oct 1 |
| Chippewa Falls | Apr 1 – June 1 | July 1 – Sept 1 |
| Cudahy | Mar 10 – May 10 | Aug 15 – Oct 15 |
| De Pere | Mar 20 – May 10 | July 15 – Sept 15 |
| DeForest | Mar 20 – May 10 | July 15 – Sept 15 |
| Eau Claire | Mar 10 – May 10 | July 15 – Sept 15 |
| Elkhorn | Mar 20 – May 10 | July 15 – Sept 15 |
| Fitchburg | Mar 20 – May 10 | July 15 – Sept 15 |
| Fond du Lac | Mar 20 – May 10 | Aug 1 – Oct 1 |
| Fort Atkinson | Mar 20 – May 10 | July 15 – Sept 15 |
| Fox Crossing | Mar 20 – May 10 | July 15 – Sept 15 |
| Franklin | Mar 20 – May 10 | July 15 – Sept 15 |
| Germantown | Apr 1 – June 1 | July 15 – Sept 15 |
| Glendale | Mar 20 – May 10 | Aug 1 – Oct 1 |
| Grafton | Mar 10 – May 10 | Aug 1 – Oct 1 |
| Green Bay | Apr 1 – June 1 | July 15 – Sept 15 |
| Greendale | Mar 20 – May 10 | July 15 – Sept 15 |
| Greenfield | Mar 20 – May 10 | July 15 – Sept 15 |
| Greenville | Mar 20 – May 10 | July 15 – Sept 15 |
| Harrison | Mar 20 – May 10 | July 15 – Sept 15 |
| Hartford | Apr 1 – June 1 | July 1 – Sept 1 |
| Hartland | Mar 20 – May 10 | July 15 – Sept 15 |
| Hobart | Mar 20 – May 10 | July 15 – Sept 15 |
| Holmen | Mar 10 – May 10 | Aug 1 – Oct 1 |
| Howard | Apr 1 – June 1 | July 15 – Sept 15 |
| Hudson | Mar 10 – May 10 | Aug 1 – Oct 1 |
| Janesville | Mar 20 – May 10 | July 15 – Sept 15 |
| Kaukauna | Mar 20 – May 10 | July 15 – Sept 15 |
| Kenosha | Mar 20 – May 10 | Aug 1 – Oct 1 |
| La Crosse | Mar 20 – May 10 | July 15 – Sept 15 |
| Lisbon | Mar 20 – May 10 | Aug 1 – Oct 1 |
| Little Chute | Mar 20 – May 10 | July 15 – Sept 15 |
| Madison | Mar 20 – May 10 | July 15 – Sept 15 |
| Manitowoc | Mar 20 – May 10 | Aug 1 – Oct 1 |
| Marinette | Mar 20 – May 10 | July 15 – Sept 15 |
| Marshfield | Mar 20 – May 10 | July 1 – Sept 1 |
| Menasha | Mar 20 – May 10 | July 15 – Sept 15 |
| Menomonee Falls | Apr 1 – June 1 | July 15 – Sept 15 |
| Menomonie | Apr 1 – June 1 | July 1 – Sept 1 |
| Mequon | Apr 1 – June 1 | July 15 – Sept 15 |
| Middleton | Mar 20 – May 10 | July 15 – Sept 15 |
| Milwaukee | Mar 20 – May 10 | Aug 1 – Oct 1 |
| Monroe | Mar 20 – May 10 | July 15 – Sept 15 |
| Mount Pleasant | Mar 10 – May 10 | Aug 1 – Oct 1 |
| Muskego | Mar 20 – May 10 | July 15 – Sept 15 |
| Neenah | Mar 20 – May 10 | July 15 – Sept 15 |
| New Berlin | Mar 20 – May 10 | July 15 – Sept 15 |
| New Richmond | Mar 10 – May 10 | Aug 1 – Oct 1 |
| Oak Creek | Mar 10 – May 10 | Aug 15 – Oct 15 |
| Oconomowoc | Mar 20 – May 10 | July 15 – Sept 15 |
| Onalaska | Mar 10 – May 10 | Aug 1 – Oct 1 |
| Oregon | Mar 20 – May 10 | July 15 – Sept 15 |
| Oshkosh | Mar 10 – May 10 | Aug 1 – Oct 1 |
| Pewaukee | Mar 20 – May 10 | July 15 – Sept 15 |
| Platteville | Mar 20 – May 10 | July 15 – Sept 15 |
| Pleasant Prairie | Mar 10 – May 10 | Aug 15 – Oct 15 |
| Plover | Mar 20 – May 10 | July 15 – Sept 15 |
| Port Washington | Mar 20 – May 10 | Aug 1 – Oct 1 |
| Racine | Mar 10 – May 10 | Aug 1 – Oct 1 |
| Reedsburg | Mar 20 – May 10 | July 15 – Sept 15 |
| Richfield | Mar 20 – May 10 | Aug 1 – Oct 1 |
| River Falls | Apr 1 – June 1 | July 1 – Sept 1 |
| Salem Lakes | Mar 20 – May 10 | July 15 – Sept 15 |
| Sheboygan | Mar 10 – May 10 | Aug 1 – Oct 1 |
| Shorewood | Mar 20 – May 10 | Aug 1 – Oct 1 |
| South Milwaukee | Mar 10 – May 10 | Aug 15 – Oct 15 |
| Stevens Point | Mar 20 – May 10 | July 15 – Sept 15 |
| Stoughton | Mar 20 – May 10 | July 15 – Sept 15 |
| Suamico | Apr 1 – June 1 | July 15 – Sept 15 |
| Sun Prairie | Mar 20 – May 10 | July 15 – Sept 15 |
| Superior | Apr 1 – June 1 | July 15 – Sept 15 |
| Sussex | Mar 20 – May 10 | Aug 1 – Oct 1 |
| Two Rivers | Mar 20 – May 10 | Aug 1 – Oct 1 |
| Verona | Mar 20 – May 10 | July 15 – Sept 15 |
| Watertown | Mar 20 – May 10 | July 15 – Sept 15 |
| Waukesha | Mar 20 – May 10 | July 15 – Sept 15 |
| Waunakee | Mar 20 – May 10 | July 15 – Sept 15 |
| Waupun | Mar 20 – May 10 | July 15 – Sept 15 |
| Wausau | Apr 1 – June 1 | July 1 – Sept 1 |
| Wauwatosa | Mar 20 – May 10 | Aug 1 – Oct 1 |
| West Allis | Mar 20 – May 10 | Aug 1 – Oct 1 |
| West Bend | Mar 20 – May 10 | July 15 – Sept 15 |
| Weston | Apr 1 – June 1 | July 1 – Sept 1 |
| Whitefish Bay | Mar 20 – May 10 | Aug 1 – Oct 1 |
| Whitewater | Mar 20 – May 10 | July 15 – Sept 15 |
| Windsor | Mar 20 – May 10 | July 15 – Sept 15 |
| Wisconsin Rapids | Apr 1 – June 1 | July 1 – Sept 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 radishes.