When to plant Swiss chard in Delaware

In spring, from Mar 1 – May 25 in Dover to Mar 15 – June 15 in Wilmington.

In fall, June 1 – Sept 10.

USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Swiss chard planting dates by place in Delaware
PlaceSpringFall
DoverMar 1 – May 25June 1 – Sept 10
MiddletownMar 15 – June 15June 1 – Sept 10
MilfordMar 15 – June 15June 1 – Sept 10
NewarkMar 15 – June 15June 1 – Sept 10
SmyrnaMar 1 – May 25June 1 – Sept 10
WilmingtonMar 15 – June 15June 1 – Sept 10

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 swiss chard.