When to plant sunflowers in Massachusetts
Sow outdoors in Boston
Apr 4–Apr 25
Across Massachusetts the window opens between April 4 and May 5. Find your city below; the dates follow each town's own average last frost.
- Sow outdoors, Boston
- Apr 4–Apr 25
- Last sowing for a harvest
- Jul 18
- Last frost, Boston
- Apr 4
Sow outdoors up to 3 weeks after the last frost. Sow every two weeks until midsummer for flowers through fall.
Sunflowers planting dates by city
Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
BostonApr 4–Apr 25
WorcesterApr 23–May 14
SpringfieldMay 3–May 24
CambridgeApr 19–May 10
LowellApr 30–May 21
BrocktonApr 22–May 13
LynnApr 25–May 16
QuincyApr 25–May 16
New BedfordApr 29–May 20
Fall RiverApr 29–May 20
NewtonApr 19–May 10
LawrenceApr 13–May 4
SomervilleApr 4–Apr 25
FraminghamApr 26–May 17
HaverhillMay 1–May 22
MaldenApr 4–Apr 25
WalthamApr 28–May 19
BrooklineApr 19–May 10
TauntonApr 22–May 13
RevereApr 4–Apr 25
MedfordApr 4–Apr 25
Weymouth TownApr 25–May 16
PeabodyApr 24–May 15
ChicopeeMay 3–May 24
MethuenApr 13–May 4
EverettApr 4–Apr 25
Barnstable TownApr 16–May 7
AttleboroApr 27–May 18
ArlingtonApr 28–May 19
SalemApr 25–May 16
All 69 cities
| City | Sow outdoors | Last frost |
|---|---|---|
| Boston | Apr 4 to Apr 25 | Apr 4 |
| Worcester | Apr 23 to May 14 | Apr 23 |
| Springfield | May 3 to May 24 | May 3 |
| Cambridge | Apr 19 to May 10 | Apr 19 |
| Lowell | Apr 30 to May 21 | Apr 30 |
| Brockton | Apr 22 to May 13 | Apr 22 |
| Lynn | Apr 25 to May 16 | Apr 25 |
| Quincy | Apr 25 to May 16 | Apr 25 |
| New Bedford | Apr 29 to May 20 | Apr 29 |
| Fall River | Apr 29 to May 20 | Apr 29 |
| Newton | Apr 19 to May 10 | Apr 19 |
| Lawrence | Apr 13 to May 4 | Apr 13 |
| Somerville | Apr 4 to Apr 25 | Apr 4 |
| Framingham | Apr 26 to May 17 | Apr 26 |
| Haverhill | May 1 to May 22 | May 1 |
| Malden | Apr 4 to Apr 25 | Apr 4 |
| Waltham | Apr 28 to May 19 | Apr 28 |
| Brookline | Apr 19 to May 10 | Apr 19 |
| Taunton | Apr 22 to May 13 | Apr 22 |
| Revere | Apr 4 to Apr 25 | Apr 4 |
| Medford | Apr 4 to Apr 25 | Apr 4 |
| Weymouth Town | Apr 25 to May 16 | Apr 25 |
| Peabody | Apr 24 to May 15 | Apr 24 |
| Chicopee | May 3 to May 24 | May 3 |
| Methuen | Apr 13 to May 4 | Apr 13 |
| Everett | Apr 4 to Apr 25 | Apr 4 |
| Barnstable Town | Apr 16 to May 7 | Apr 16 |
| Attleboro | Apr 27 to May 18 | Apr 27 |
| Arlington | Apr 28 to May 19 | Apr 28 |
| Salem | Apr 25 to May 16 | Apr 25 |
| Leominster | Apr 29 to May 20 | Apr 29 |
| Woburn | Apr 25 to May 16 | Apr 25 |
| Beverly | May 4 to May 25 | May 4 |
| Pittsfield | May 5 to May 26 | May 5 |
| Marlborough | May 2 to May 23 | May 2 |
| Fitchburg | May 1 to May 22 | May 1 |
| Amherst Town | May 5 to May 26 | May 5 |
| Westfield | May 3 to May 24 | May 3 |
| Chelsea | Apr 4 to Apr 25 | Apr 4 |
| Braintree Town | Apr 25 to May 16 | Apr 25 |
| Holyoke | May 3 to May 24 | May 3 |
| Watertown | Apr 19 to May 10 | Apr 19 |
| Randolph Town | Apr 18 to May 9 | Apr 18 |
| Lexington | Apr 28 to May 19 | Apr 28 |
| Franklin Town | Apr 30 to May 21 | Apr 30 |
| Needham | Apr 26 to May 17 | Apr 26 |
| North Attleborough Town | Apr 22 to May 13 | Apr 22 |
| Norwood | Apr 25 to May 16 | Apr 25 |
| Northampton | May 5 to May 26 | May 5 |
| Gloucester | May 4 to May 25 | May 4 |
| Wellesley | Apr 26 to May 17 | Apr 26 |
| Melrose | Apr 25 to May 16 | Apr 25 |
| Bridgewater Town | May 1 to May 22 | May 1 |
| West Springfield Town | May 3 to May 24 | May 3 |
| Agawam Town | May 3 to May 24 | May 3 |
| Saugus | Apr 25 to May 16 | Apr 25 |
| Milton | Apr 18 to May 9 | Apr 18 |
| Danvers | Apr 24 to May 15 | Apr 24 |
| Milford | Apr 30 to May 21 | Apr 30 |
| Wakefield | Apr 25 to May 16 | Apr 25 |
| Belmont | Apr 19 to May 10 | Apr 19 |
| Burlington | Apr 25 to May 16 | Apr 25 |
| Reading | Apr 25 to May 16 | Apr 25 |
| Dedham | Apr 25 to May 16 | Apr 25 |
| Wilmington | Apr 25 to May 16 | Apr 25 |
| Stoneham | Apr 25 to May 16 | Apr 25 |
| Winchester | Apr 25 to May 16 | Apr 25 |
| Gardner | May 2 to May 23 | May 2 |
| Marblehead | Apr 25 to May 16 | Apr 25 |
Questions
When should I plant sunflowers in Massachusetts?
In Boston, sow outdoors from April 4 to April 25. Across Massachusetts the window opens between April 4 and May 5, depending on the local last frost.
How is this date worked out?
Sow outdoors up to 3 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.
More for Massachusetts
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Sunflowers in other states
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
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- North Carolina
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- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
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- South Dakota
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- Virginia
- Washington
- West Virginia
- Wisconsin
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