When to plant mustard greens in Massachusetts
Massachusetts spans USDA zones 5b–7b, so the right time to plant mustard greens shifts by weeks across the state. The window to sow seed directly outdoors runs from about March 7 in Boston to April 12 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 | March 7 – April 18 |
| Worcester | 6a | April 23 | October 21 | March 26 – May 7 |
| Springfield | 6a | May 3 | October 8 | April 5 – May 17 |
| Cambridge | 6b | April 19 | October 23 | March 22 – May 3 |
| Lowell | 6b | April 30 | October 10 | April 2 – May 14 |
| Brockton | 6b | April 22 | October 19 | March 25 – May 6 |
| Quincy | 7a | April 25 | October 22 | March 28 – May 9 |
| Lynn | 7a | April 25 | October 20 | March 28 – May 9 |
Mustard Greens in Massachusetts: FAQ
When can I plant mustard greens in Massachusetts?
Across Massachusetts, the time to direct-sow mustard greens spans roughly March 7 in Boston to April 12 in North Adams, each following that city's local frost dates.
Does the mustard greens planting date vary across Massachusetts?
Yes. Massachusetts publishes 89 cities with their own frost dates, so the right mustard greens 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 mustard greens take to grow in Massachusetts?
Mustard Greens takes about 30–45 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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