Frost dates by location
| Location | Zone | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|---|
| Boston | 7a | Apr 4 | Nov 9 | 219 |
| South Boston | 6b | Apr 24 | Oct 17 | 176 |
| Worcester | 6b | Apr 29 | Oct 12 | 166 |
| Springfield | 6a | May 5 | Oct 9 | 157 |
| Lowell | 6a | Apr 28 | Oct 13 | 168 |
| Cambridge | 6b | Apr 24 | Oct 17 | 176 |
| New Bedford | 7a | Apr 21 | Oct 23 | 185 |
| Dorchester | 6b | Apr 24 | Oct 17 | 176 |
| Brockton | 6b | Apr 24 | Oct 17 | 176 |
| Fall River | 7a | Apr 18 | Oct 24 | 189 |
| Quincy | 6b | Apr 24 | Oct 17 | 176 |
| Lynn | 7a | Apr 19 | Oct 24 | 188 |
| Newton | 6b | Apr 24 | Oct 17 | 176 |
Zones in Massachusetts
Bottom line: a statewide planting date is a compromise nobody's garden actually
lives at. Massachusetts's last-frost spread is
31 days wide. Use the location nearest you.
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