When to plant Lettuce in Maryland

In spring, from Feb 1 – Apr 1 in Baltimore to Mar 20 – May 15 in Westminster.

In fall, from July 15 – Sept 1 in Bowie to Sept 1 – Nov 1 in Baltimore.

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 Maryland
PlaceSpringFall
AberdeenMar 15 – May 15Aug 15 – Oct 1
AnnapolisFeb 15 – Apr 15Aug 25 – Oct 1
BaltimoreFeb 1 – Apr 1Sept 1 – Nov 1Now
Bel AirMar 15 – May 15Aug 15 – Oct 1
BowieMar 20 – May 15July 15 – Sept 1
CambridgeFeb 15 – Apr 15Aug 25 – Oct 1
College ParkMar 15 – May 15Aug 15 – Oct 1
CumberlandMar 15 – May 15July 15 – Sept 1
EastonFeb 15 – Apr 15Aug 25 – Oct 1
ElktonMar 15 – May 15Aug 15 – Oct 1
FrederickFeb 15 – Apr 15Aug 25 – Oct 1
GaithersburgFeb 15 – Apr 15Aug 25 – Oct 1
GreenbeltMar 15 – May 15Aug 15 – Oct 1
HagerstownMar 15 – May 15Aug 15 – Oct 1
Havre de GraceMar 15 – May 15Aug 15 – Oct 1
HyattsvilleFeb 15 – Apr 15Aug 25 – Oct 1
La PlataMar 20 – May 15Aug 15 – Oct 1
LaurelMar 15 – May 15Aug 25 – Oct 1
New CarrolltonMar 20 – May 15July 15 – Sept 1
RockvilleFeb 15 – Apr 15Aug 25 – Oct 1
SalisburyFeb 15 – Apr 15Aug 25 – Oct 1
Takoma ParkFeb 15 – Apr 15Aug 25 – Oct 1
WestminsterMar 20 – May 15July 15 – Sept 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.