When to plant Sweet potatoes in Delaware
In spring, from Apr 20 – June 1 in Dover to May 1 – June 1 in Wilmington.
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 |
|---|---|---|
| Dover | Apr 20 – June 1 | June 1 – 15 |
| Middletown | May 1 – June 1 | June 1 – 15 |
| Milford | May 1 – June 1 | June 1 – 15 |
| Newark | May 1 – June 1 | June 1 – 15 |
| Smyrna | Apr 20 – June 1 | June 1 – 15 |
| Wilmington | May 1 – June 1 | June 1 – 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 sweet potatoes.