When to plant Kale in Maine
In spring, from Mar 20 – Apr 10 in Auburn to Apr 20 – May 10 in Sanford.
For a fall crop, from June 15 – July 15 in Bangor to July 15 – Aug 15 in Lewiston.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Auburn | Mar 20 – Apr 10 | July 15 – Aug 15 |
| Augusta | Apr 1 – 20 | July 15 – Aug 15 |
| Bangor | Apr 1 – 20 | June 15 – July 15 |
| Biddeford | Apr 10 – May 1 | June 15 – July 15 |
| Lewiston | Mar 20 – Apr 10 | July 15 – Aug 15 |
| Portland | Apr 1 – 20 | July 1 – Aug 1 |
| Saco | Apr 1 – 20 | July 1 – Aug 1 |
| Sanford | Apr 20 – May 10 | June 15 – July 15 |
| South Portland | Apr 1 – 20 | July 1 – Aug 1 |
| Waterville | Apr 1 – 20 | July 1 – Aug 1 |
| Westbrook | Apr 1 – 20 | July 1 – Aug 1 |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. The full USDA table for kale.