When to plant Spinach in Massachusetts

In spring, from Feb 1 – Mar 20 in Boston to Apr 1 – June 15 in North Adams.

For a fall crop, from July 1 – Aug 15 in North Adams to Sept 15 – Nov 1 in Winthrop Town.

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

Spinach planting dates by place in Massachusetts
PlaceSpringFall
Agawam TownMar 20 – Apr 20Aug 1 – Sept 1
AmesburyMar 20 – Apr 20Aug 1 – Sept 1
Amherst TownMar 20 – Apr 20Aug 1 – Sept 1
AttleboroMar 20 – Apr 20Aug 1 – Sept 1
Barnstable TownMar 1 – Apr 15Sept 1 – Oct 1
BeverlyMar 20 – Apr 20Aug 1 – Sept 1
BostonFeb 1 – Mar 20Sept 15 – Nov 1Now
Braintree TownMar 1 – Apr 15Aug 20 – Sept 10
Bridgewater TownMar 20 – Apr 20Aug 1 – Sept 1
BrocktonMar 1 – Apr 15Aug 20 – Sept 10
CambridgeMar 1 – Apr 15Aug 20 – Sept 10
ChelseaFeb 1 – Mar 20Sept 15 – Nov 1Now
ChicopeeMar 20 – Apr 20Aug 1 – Sept 1
EasthamptonMar 20 – Apr 20Aug 1 – Sept 1
EverettFeb 1 – Mar 20Sept 15 – Nov 1Now
Fall RiverMar 20 – Apr 20Aug 1 – Sept 1
FitchburgMar 20 – Apr 20Aug 1 – Sept 1
FraminghamMar 20 – Apr 20Aug 1 – Sept 1
Franklin TownMar 20 – Apr 20Aug 1 – Sept 1
GardnerMar 20 – Apr 20Aug 1 – Sept 1
GloucesterMar 20 – Apr 20Aug 1 – Sept 1
GreenfieldMar 20 – Apr 20Aug 1 – Sept 1
HaverhillMar 20 – Apr 20Aug 1 – Sept 1
HolyokeMar 20 – Apr 20Aug 1 – Sept 1
LawrenceFeb 15 – Apr 1Sept 1 – Oct 1
LeominsterMar 20 – Apr 20Aug 1 – Sept 1
LowellMar 20 – Apr 20Aug 1 – Sept 1
LynnMar 1 – Apr 15Aug 20 – Sept 10
MaldenFeb 1 – Mar 20Sept 15 – Nov 1Now
MarlboroughMar 20 – Apr 20Aug 1 – Sept 1
MedfordFeb 1 – Mar 20Sept 15 – Nov 1Now
MelroseMar 1 – Apr 15Aug 20 – Sept 10
MethuenFeb 15 – Apr 1Sept 1 – Oct 1
New BedfordMar 20 – Apr 20Aug 1 – Sept 1
NewburyportMar 20 – Apr 20Aug 1 – Sept 1
NewtonMar 1 – Apr 15Aug 20 – Sept 10
North AdamsApr 1 – June 15July 1 – Aug 15
North Attleborough TownMar 1 – Apr 15Aug 20 – Sept 10
NorthamptonMar 20 – Apr 20Aug 1 – Sept 1
Palmer TownMar 20 – Apr 20Aug 1 – Sept 1
PeabodyMar 1 – Apr 15Aug 20 – Sept 10
PittsfieldMar 20 – Apr 20July 1 – Aug 15
QuincyMar 1 – Apr 15Aug 20 – Sept 10
Randolph TownMar 1 – Apr 15Sept 1 – Oct 1
RevereFeb 1 – Mar 20Sept 15 – Nov 1Now
SalemMar 1 – Apr 15Aug 20 – Sept 10
SomervilleFeb 1 – Mar 20Sept 15 – Nov 1Now
Southbridge TownMar 1 – Apr 15Aug 1 – Sept 1
SpringfieldMar 20 – Apr 20Aug 1 – Sept 1
TauntonMar 1 – Apr 15Aug 20 – Sept 10
WalthamMar 20 – Apr 20Aug 1 – Sept 1
WatertownMar 1 – Apr 15Aug 20 – Sept 10
West Springfield TownMar 20 – Apr 20Aug 1 – Sept 1
WestfieldMar 20 – Apr 20Aug 1 – Sept 1
Weymouth TownMar 1 – Apr 15Aug 20 – Sept 10
Winthrop TownFeb 1 – Mar 20Sept 15 – Nov 1Now
WoburnMar 1 – Apr 15Aug 20 – Sept 10
WorcesterMar 1 – Apr 15Aug 20 – Sept 10

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. The full USDA table for spinach.