When to plant Lettuce in Connecticut

In spring, from Mar 15 – May 15 in Bridgeport to Apr 15 – June 15 in Torrington.

In fall, from June 1 – Aug 1 in Torrington to Aug 25 – Oct 1 in Milford.

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

Leaf lettuce planting dates by place in Connecticut
PlaceSpringFall
AnsoniaMar 20 – May 15July 15 – Sept 1
BridgeportMar 15 – May 15Aug 25 – Oct 1
BristolMar 20 – May 15July 15 – Sept 1
DanburyApr 1 – June 1July 15 – Sept 1
DerbyMar 20 – May 15July 15 – Sept 1
GrotonMar 20 – May 15Aug 15 – Oct 1
HartfordMar 20 – May 15Aug 15 – Oct 1
MeridenApr 1 – June 1July 15 – Sept 1
MiddletownApr 1 – June 1July 15 – Sept 1
MilfordMar 15 – May 15Aug 25 – Oct 1
NaugatuckMar 20 – May 15Aug 15 – Oct 1
New BritainMar 20 – May 15Aug 15 – Oct 1
New HavenMar 20 – May 15Aug 15 – Oct 1
New LondonMar 20 – May 15Aug 15 – Oct 1
NorwalkMar 20 – May 15July 15 – Sept 1
NorwichMar 15 – May 15July 15 – Sept 1
SheltonMar 20 – May 15July 15 – Sept 1
StamfordMar 20 – May 15July 15 – Sept 1
TorringtonApr 15 – June 15June 1 – Aug 1
WaterburyApr 1 – June 1July 15 – Sept 1
West HavenMar 20 – May 15Aug 15 – Oct 1

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 leaf lettuce.