When to plant Green beans in Pennsylvania

In spring, from Apr 1 – June 1 in Chester to May 10 – June 30 in York.

In fall, from June 1 – July 10 in Hermitage to July 1 – Aug 1 in York.

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

Snap beans planting dates by place in Pennsylvania
PlaceSpringFall
AllentownApr 25 – June 30July 1 – Aug 1
AltoonaApr 25 – June 30July 1 – Aug 1
BaldwinApr 25 – June 30July 1 – Aug 15
BerwickMay 10 – June 30June 15 – July 20
Bethel ParkApr 25 – June 30July 1 – Aug 15
BethlehemApr 25 – June 30July 1 – Aug 1
BloomsburgMay 10 – June 30July 1 – Aug 1
ButlerMay 10 – June 30June 15 – July 20
CarlisleApr 25 – June 30July 1 – Aug 1
ChambersburgApr 25 – June 30July 1 – Aug 1
ChesterApr 1 – June 1July 1 – Sept 10
CoatesvilleApr 25 – June 30July 1 – Aug 1
ColumbiaMay 10 – June 30June 15 – July 20
DarbyApr 1 – June 1July 1 – Sept 1
DunmoreApr 25 – June 30July 1 – Aug 1
EastonApr 25 – June 30July 1 – Aug 1
ElizabethtownApr 10 – June 30July 1 – Aug 15
EmmausApr 25 – June 30July 1 – Aug 1
EphrataApr 25 – June 30July 1 – Aug 1
ErieMay 10 – June 30July 1 – Aug 15
Franklin ParkApr 25 – June 30July 1 – Aug 15
GreensburgMay 10 – June 30June 15 – July 20
HanoverApr 25 – June 30July 1 – Aug 1
HarrisburgApr 10 – June 30July 1 – Aug 1
HazletonMay 10 – June 30July 1 – Aug 1
HermitageMay 10 – June 30June 1 – July 10
IndianaMay 10 – June 30June 15 – July 20
Jefferson HillsApr 25 – June 30July 1 – Aug 15
JohnstownMay 10 – June 30July 1 – Aug 1
KingstonApr 25 – June 30July 1 – Aug 1
LancasterApr 25 – June 30July 1 – Aug 1
LansdaleApr 10 – June 30July 1 – Aug 15
LansdowneApr 1 – June 1July 1 – Sept 1
LebanonApr 25 – June 30July 1 – Aug 1
Lower BurrellApr 25 – June 30July 1 – Aug 15
McKeesportMay 10 – June 30July 1 – Aug 1
MeadvilleMay 10 – June 30July 1 – Aug 1
MechanicsburgApr 10 – June 30July 1 – Aug 15
MonroevilleApr 25 – June 30July 1 – Aug 1
MunhallApr 10 – June 30July 1 – Sept 1
MurrysvilleApr 25 – June 30July 1 – Aug 1
NanticokeMay 10 – June 30June 15 – July 20
New CastleMay 10 – June 30July 1 – Aug 1
New KensingtonApr 25 – June 30July 1 – Aug 15
NorristownApr 10 – June 30July 1 – Aug 15
NorthamptonApr 25 – June 30July 1 – Aug 1
PhiladelphiaApr 1 – June 1July 1 – Sept 10
PhoenixvilleApr 25 – June 30July 1 – Aug 15
PittsburghApr 25 – June 30July 1 – Aug 15
PlumApr 25 – June 30July 1 – Aug 15
PottstownApr 25 – June 30July 1 – Aug 1
PottsvilleMay 10 – June 30July 1 – Aug 1
ReadingApr 10 – June 30July 1 – Aug 15
ScrantonApr 25 – June 30July 1 – Aug 1
SharonMay 10 – June 30July 1 – Aug 1
St. MarysMay 10 – June 30June 15 – July 20
State CollegeApr 25 – June 30July 1 – Aug 15
WashingtonApr 25 – June 30July 1 – Aug 1
WaynesboroApr 25 – June 30July 1 – Aug 1
West ChesterMay 10 – June 30July 1 – Aug 1
West MifflinApr 25 – June 30July 1 – Aug 15
WhitehallApr 25 – June 30July 1 – Aug 15
Wilkes-BarreApr 25 – June 30July 1 – Aug 1
WilkinsburgApr 10 – June 30July 1 – Sept 1
WilliamsportApr 25 – June 30July 1 – Aug 1
WyomissingApr 10 – June 30July 1 – Aug 15
YeadonApr 1 – June 1July 1 – Sept 1
YorkMay 10 – June 30July 1 – Aug 1

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 snap beans.