When to plant Sweet corn in Massachusetts

In spring, from Mar 25 – May 15 in Boston to May 10 – June 15 in Westfield.

In fall, June 1 – July 10.

USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Sweet corn planting dates by place in Massachusetts
PlaceSpringFall
Agawam TownMay 10 – June 15June 1 – July 10
AmesburyMay 10 – June 15June 1 – July 10
Amherst TownMay 10 – June 15June 1 – July 10
AttleboroMay 10 – June 15June 1 – July 10
Barnstable TownApr 25 – June 15June 1 – Aug 1
BeverlyMay 10 – June 15June 1 – July 10
BostonMar 25 – May 15June 1 – Aug 15
Braintree TownApr 25 – June 15June 1 – July 20
Bridgewater TownMay 10 – June 15June 1 – July 10
BrocktonApr 25 – June 15June 1 – July 20
CambridgeApr 25 – June 15June 1 – July 20
ChelseaMar 25 – May 15June 1 – Aug 15
ChicopeeMay 10 – June 15June 1 – July 10
EasthamptonMay 10 – June 15June 1 – July 10
EverettMar 25 – May 15June 1 – Aug 15
Fall RiverMay 10 – June 15June 1 – July 10
FitchburgMay 10 – June 15June 1 – July 10
FraminghamMay 10 – June 15June 1 – July 10
Franklin TownMay 10 – June 15June 1 – July 10
GardnerMay 10 – June 15June 1 – July 10
GloucesterMay 10 – June 15June 1 – July 10
GreenfieldMay 10 – June 15June 1 – July 10
HaverhillMay 10 – June 15June 1 – July 10
HolyokeMay 10 – June 15June 1 – July 10
LawrenceApr 10 – June 1June 1 – Aug 1
LeominsterMay 10 – June 15June 1 – July 10
LowellMay 10 – June 15June 1 – July 10
LynnApr 25 – June 15June 1 – July 20
MaldenMar 25 – May 15June 1 – Aug 15
MarlboroughMay 10 – June 15June 1 – July 10
MedfordMar 25 – May 15June 1 – Aug 15
MelroseApr 25 – June 15June 1 – July 20
MethuenApr 10 – June 1June 1 – Aug 1
New BedfordMay 10 – June 15June 1 – July 10
NewburyportMay 10 – June 15June 1 – July 10
NewtonApr 25 – June 15June 1 – July 20
North AdamsMay 10 – June 1June 1 – July 1
North Attleborough TownApr 25 – June 15June 1 – July 20
NorthamptonMay 10 – June 15June 1 – July 10
Palmer TownMay 10 – June 15June 1 – July 10
PeabodyApr 25 – June 15June 1 – July 20
PittsfieldMay 10 – June 15June 1 – July 1
QuincyApr 25 – June 15June 1 – July 20
Randolph TownApr 25 – June 15June 1 – Aug 1
RevereMar 25 – May 15June 1 – Aug 15
SalemApr 25 – June 15June 1 – July 20
SomervilleMar 25 – May 15June 1 – Aug 15
Southbridge TownApr 25 – June 15June 1 – July 10
SpringfieldMay 10 – June 15June 1 – July 10
TauntonApr 25 – June 15June 1 – July 20
WalthamMay 10 – June 15June 1 – July 10
WatertownApr 25 – June 15June 1 – July 20
West Springfield TownMay 10 – June 15June 1 – July 10
WestfieldMay 10 – June 15June 1 – July 10
Weymouth TownApr 25 – June 15June 1 – July 20
Winthrop TownMar 25 – May 15June 1 – Aug 15
WoburnApr 25 – June 15June 1 – July 20
WorcesterApr 25 – June 15June 1 – July 20

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 sweet corn.