When to plant Peas in Maryland

In spring, from Feb 1 – Mar 15 in Baltimore to Mar 10 – Apr 10 in Westminster.

In fall, from Aug 1 – Sept 15 in Aberdeen to Oct 1 – Dec 1 in Baltimore.

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

Garden peas planting dates by place in Maryland
PlaceSpringFall
AberdeenFeb 20 – Mar 20Aug 1 – Sept 15
AnnapolisFeb 10 – Mar 20Sept 1 – Nov 1Now
BaltimoreFeb 1 – Mar 15Oct 1 – Dec 1Now
Bel AirFeb 20 – Mar 20Aug 1 – Sept 15
BowieMar 10 – Apr 10Spring-planted
CambridgeFeb 10 – Mar 20Sept 1 – Nov 1Now
College ParkFeb 20 – Mar 20Aug 1 – Sept 15
CumberlandFeb 20 – Mar 20Spring-planted
EastonFeb 10 – Mar 20Sept 1 – Nov 1Now
ElktonFeb 20 – Mar 20Aug 1 – Sept 15
FrederickFeb 10 – Mar 20Sept 1 – Nov 1Now
GaithersburgFeb 10 – Mar 20Sept 1 – Nov 1Now
GreenbeltFeb 20 – Mar 20Aug 1 – Sept 15
HagerstownFeb 20 – Mar 20Aug 1 – Sept 15
Havre de GraceFeb 20 – Mar 20Aug 1 – Sept 15
HyattsvilleFeb 10 – Mar 20Sept 1 – Nov 1Now
La PlataMar 10 – Apr 10Aug 1 – Sept 15
LaurelFeb 20 – Mar 20Sept 1 – Nov 1Now
New CarrolltonMar 10 – Apr 10Spring-planted
RockvilleFeb 10 – Mar 20Sept 1 – Nov 1Now
SalisburyFeb 10 – Mar 20Sept 1 – Nov 1Now
Takoma ParkFeb 10 – Mar 20Sept 1 – Nov 1Now
WestminsterMar 10 – Apr 10Spring-planted

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 garden peas.