When to plant Cabbage in District of Columbia

In spring, Feb 15 – Mar 10 in Washington.

In fall, Sept 1 – 15 in Washington.

Dates are for setting out plants. USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Cabbage planting dates by place in District of Columbia
PlaceSpringFall
WashingtonFeb 15 – Mar 10Sept 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 cabbage.