When to plant Onions in Massachusetts
In spring, from Feb 15 – Mar 15 in Boston to Apr 10 – May 1 in North Adams.
In fall, Sept 1 – Oct 15.
Dates are for setting out plants. USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Agawam Town | Apr 1 – May 1 | Spring-planted |
| Amesbury | Apr 1 – May 1 | Spring-planted |
| Amherst Town | Apr 1 – May 1 | Spring-planted |
| Attleboro | Apr 1 – May 1 | Spring-planted |
| Barnstable Town | Mar 15 – Apr 10 | Not listed |
| Beverly | Apr 1 – May 1 | Spring-planted |
| Boston | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Braintree Town | Mar 15 – Apr 10 | Spring-planted |
| Bridgewater Town | Apr 1 – May 1 | Spring-planted |
| Brockton | Mar 15 – Apr 10 | Spring-planted |
| Cambridge | Mar 15 – Apr 10 | Spring-planted |
| Chelsea | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Chicopee | Apr 1 – May 1 | Spring-planted |
| Easthampton | Apr 1 – May 1 | Spring-planted |
| Everett | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Fall River | Apr 1 – May 1 | Spring-planted |
| Fitchburg | Apr 1 – May 1 | Spring-planted |
| Framingham | Apr 1 – May 1 | Spring-planted |
| Franklin Town | Apr 1 – May 1 | Spring-planted |
| Gardner | Apr 1 – May 1 | Spring-planted |
| Gloucester | Apr 1 – May 1 | Spring-planted |
| Greenfield | Apr 1 – May 1 | Spring-planted |
| Haverhill | Apr 1 – May 1 | Spring-planted |
| Holyoke | Apr 1 – May 1 | Spring-planted |
| Lawrence | Mar 1 – Apr 1 | Not listed |
| Leominster | Apr 1 – May 1 | Spring-planted |
| Lowell | Apr 1 – May 1 | Spring-planted |
| Lynn | Mar 15 – Apr 10 | Spring-planted |
| Malden | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Marlborough | Apr 1 – May 1 | Spring-planted |
| Medford | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Melrose | Mar 15 – Apr 10 | Spring-planted |
| Methuen | Mar 1 – Apr 1 | Not listed |
| New Bedford | Apr 1 – May 1 | Spring-planted |
| Newburyport | Apr 1 – May 1 | Spring-planted |
| Newton | Mar 15 – Apr 10 | Spring-planted |
| North Adams | Apr 10 – May 1 | Spring-planted |
| North Attleborough Town | Mar 15 – Apr 10 | Spring-planted |
| Northampton | Apr 1 – May 1 | Spring-planted |
| Palmer Town | Apr 1 – May 1 | Spring-planted |
| Peabody | Mar 15 – Apr 10 | Spring-planted |
| Pittsfield | Apr 1 – May 1 | Spring-planted |
| Quincy | Mar 15 – Apr 10 | Spring-planted |
| Randolph Town | Mar 15 – Apr 10 | Not listed |
| Revere | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Salem | Mar 15 – Apr 10 | Spring-planted |
| Somerville | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Southbridge Town | Mar 15 – Apr 10 | Spring-planted |
| Springfield | Apr 1 – May 1 | Spring-planted |
| Taunton | Mar 15 – Apr 10 | Spring-planted |
| Waltham | Apr 1 – May 1 | Spring-planted |
| Watertown | Mar 15 – Apr 10 | Spring-planted |
| West Springfield Town | Apr 1 – May 1 | Spring-planted |
| Westfield | Apr 1 – May 1 | Spring-planted |
| Weymouth Town | Mar 15 – Apr 10 | Spring-planted |
| Winthrop Town | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Woburn | Mar 15 – Apr 10 | Spring-planted |
| Worcester | Mar 15 – Apr 10 | Spring-planted |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for onion plants.