When to plant Collard greens in Rhode Island
In spring, from Mar 1 – June 1 in Cranston to Mar 10 – June 1 in Woonsocket.
In fall, from July 15 – Aug 15 in Central Falls to Aug 15 – Oct 1 in Newport.
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 |
|---|---|---|
| Central Falls | Mar 10 – June 1 | July 15 – Aug 15 |
| Cranston | Mar 1 – June 1 | Aug 1 – Sept 15 |
| East Providence | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Newport | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Pawtucket | Mar 10 – June 1 | July 15 – Aug 15 |
| Providence | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Warwick | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Woonsocket | Mar 10 – June 1 | July 15 – Aug 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 collards.