When to plant lettuce in Maine
Maine spans USDA zones 5a–6a, so the right time to plant lettuce shifts by weeks across the state. The window to transplant seedlings outdoors runs from about April 4 in Lewiston to April 25 in Sanford — below are local dates for 13 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Portland | 6a | April 26 | October 15 | April 5 – April 26 |
| Lewiston | 5b | April 25 | October 19 | April 4 – April 25 |
| Bangor | 5a | May 4 | October 4 | April 13 – May 4 |
| South Portland | 6a | April 26 | October 15 | April 5 – April 26 |
| Auburn | 5b | April 25 | October 19 | April 4 – April 25 |
| Biddeford | 6a | May 9 | October 3 | April 18 – May 9 |
| Sanford | 5b | May 16 | September 30 | April 25 – May 16 |
| Saco | 6a | April 26 | October 15 | April 5 – April 26 |
Lettuce in Maine: FAQ
When can I plant lettuce in Maine?
Across Maine, the time to transplant lettuce spans roughly April 4 in Lewiston to April 25 in Sanford, each following that city's local frost dates.
Does the lettuce planting date vary across Maine?
Yes. Maine publishes 13 cities with their own frost dates, so the right lettuce planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does lettuce take to grow in Maine?
Lettuce takes about 45–60 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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