When to plant Radishes in South Dakota
In spring, from Mar 20 – May 10 in Brandon to Apr 1 – June 1 in Watertown.
In fall, from July 1 – Sept 1 in Aberdeen to July 15 – Sept 15 in Yankton.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Aberdeen | Apr 1 – June 1 | July 1 – Sept 1 |
| Box Elder | Apr 1 – June 1 | July 1 – Sept 1 |
| Brandon | Mar 20 – May 10 | July 15 – Sept 15 |
| Brookings | Apr 1 – June 1 | July 1 – Sept 1 |
| Harrisburg | Mar 20 – May 10 | July 1 – Sept 1 |
| Huron | Apr 1 – June 1 | July 1 – Sept 1 |
| Mitchell | Mar 20 – May 10 | July 15 – Sept 15 |
| Pierre | Apr 1 – June 1 | July 1 – Sept 1 |
| Rapid City | Mar 20 – May 10 | July 15 – Sept 15 |
| Sioux Falls | Mar 20 – May 10 | July 15 – Sept 15 |
| Spearfish | Apr 1 – June 1 | July 1 – Sept 1 |
| Vermillion | Mar 20 – May 10 | July 1 – Sept 1 |
| Watertown | Apr 1 – June 1 | July 1 – Sept 1 |
| Yankton | Mar 20 – May 10 | July 15 – Sept 15 |
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.