When to plant edamame in Massachusetts
Massachusetts spans USDA zones 5b–7b, so the right time to plant edamame shifts by weeks across the state. The window to sow seed directly outdoors runs from about April 11 in Boston to May 17 in North Adams — below are local dates for 89 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Boston | 7a | April 4 | November 9 | April 11 – May 2 |
| Worcester | 6a | April 23 | October 21 | April 30 – May 21 |
| Springfield | 6a | May 3 | October 8 | May 10 – May 31 |
| Cambridge | 6b | April 19 | October 23 | April 26 – May 17 |
| Lowell | 6b | April 30 | October 10 | May 7 – May 28 |
| Brockton | 6b | April 22 | October 19 | April 29 – May 20 |
| Quincy | 7a | April 25 | October 22 | May 2 – May 23 |
| Lynn | 7a | April 25 | October 20 | May 2 – May 23 |
Edamame in Massachusetts: FAQ
When can I plant edamame in Massachusetts?
Across Massachusetts, the time to direct-sow edamame spans roughly April 11 in Boston to May 17 in North Adams, each following that city's local frost dates.
Does the edamame planting date vary across Massachusetts?
Yes. Massachusetts publishes 89 cities with their own frost dates, so the right edamame 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 edamame take to grow in Massachusetts?
Edamame takes about 75–95 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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