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