When to plant celeriac in Massachusetts
Massachusetts spans USDA zones 5b–7b, so the right time to plant celeriac shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 21 in Boston to April 26 in North Adams — below are local dates for 89 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Boston | 7a | April 4 | November 9 | March 21 – April 4 |
| Worcester | 6a | April 23 | October 21 | April 9 – April 23 |
| Springfield | 6a | May 3 | October 8 | April 19 – May 3 |
| Cambridge | 6b | April 19 | October 23 | April 5 – April 19 |
| Lowell | 6b | April 30 | October 10 | April 16 – April 30 |
| Brockton | 6b | April 22 | October 19 | April 8 – April 22 |
| Quincy | 7a | April 25 | October 22 | April 11 – April 25 |
| Lynn | 7a | April 25 | October 20 | April 11 – April 25 |
Celeriac in Massachusetts: FAQ
When can I plant celeriac in Massachusetts?
Across Massachusetts, the time to transplant celeriac spans roughly March 21 in Boston to April 26 in North Adams, each following that city's local frost dates.
Does the celeriac planting date vary across Massachusetts?
Yes. Massachusetts publishes 89 cities with their own frost dates, so the right celeriac 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 celeriac take to grow in Massachusetts?
Celeriac takes about 100–120 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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