When to plant Collard greens in District of Columbia
In spring, Mar 1 – June 1 in Washington.
In fall, Aug 15 – Oct 1 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.
| Place | Spring | Fall |
|---|---|---|
| Washington | Mar 1 – June 1 | Aug 15 – Oct 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 collards.