When to plant celery in Pennsylvania

Celery
Plant out in Philadelphia
Apr 6–Apr 13

Across Pennsylvania the window opens between April 6 and May 7. Find your city below; the dates follow each town's own average last frost.

Start indoors, Philadelphia
Jan 5–Jan 19
Plant out, Philadelphia
Apr 6–Apr 13
Last frost, Philadelphia
Mar 30

Start seeds indoors 10–12 weeks before the last frost; plant out 1–2 weeks after the last frost. Celery needs steady moisture all season.

Celery planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
PhiladelphiaApr 6–Apr 13
PittsburghApr 25–May 2
AllentownApr 27–May 4
ReadingApr 21–Apr 28
ErieMay 3–May 10
BethlehemApr 27–May 4
ScrantonApr 30–May 7
LancasterApr 26–May 3
LevittownApr 28–May 5
HarrisburgApr 22–Apr 29
YorkMay 3–May 10
Wilkes-BarreApr 30–May 7
AltoonaMay 2–May 9
State CollegeApr 27–May 4
Penn HillsApr 23–Apr 30
NorristownApr 15–Apr 22
ChesterApr 6–Apr 13
Mount LebanonApr 25–May 2
Bethel ParkApr 25–May 2
EastonApr 25–May 2
HazletonMay 7–May 14
Drexel HillApr 9–Apr 16
MonroevilleApr 29–May 6
WilliamsportMay 2–May 9
LebanonApr 27–May 4
PlumApr 23–Apr 30
King of PrussiaApr 15–Apr 22
ChambersburgApr 25–May 2
PottstownApr 27–May 4
CarlisleApr 30–May 7
All 35 cities
CityStart indoorsPlant outLast frost
PhiladelphiaJan 5 to Jan 19Apr 6 to Apr 13Mar 30
PittsburghJan 24 to Feb 7Apr 25 to May 2Apr 18
AllentownJan 26 to Feb 9Apr 27 to May 4Apr 20
ReadingJan 20 to Feb 3Apr 21 to Apr 28Apr 14
ErieFeb 1 to Feb 15May 3 to May 10Apr 26
BethlehemJan 26 to Feb 9Apr 27 to May 4Apr 20
ScrantonJan 29 to Feb 12Apr 30 to May 7Apr 23
LancasterJan 25 to Feb 8Apr 26 to May 3Apr 19
LevittownJan 27 to Feb 10Apr 28 to May 5Apr 21
HarrisburgJan 21 to Feb 4Apr 22 to Apr 29Apr 15
YorkFeb 1 to Feb 15May 3 to May 10Apr 26
Wilkes-BarreJan 29 to Feb 12Apr 30 to May 7Apr 23
AltoonaJan 31 to Feb 14May 2 to May 9Apr 25
State CollegeJan 26 to Feb 9Apr 27 to May 4Apr 20
Penn HillsJan 22 to Feb 5Apr 23 to Apr 30Apr 16
NorristownJan 14 to Jan 28Apr 15 to Apr 22Apr 8
ChesterJan 5 to Jan 19Apr 6 to Apr 13Mar 30
Mount LebanonJan 24 to Feb 7Apr 25 to May 2Apr 18
Bethel ParkJan 24 to Feb 7Apr 25 to May 2Apr 18
EastonJan 24 to Feb 7Apr 25 to May 2Apr 18
HazletonFeb 5 to Feb 19May 7 to May 14Apr 30
Drexel HillJan 8 to Jan 22Apr 9 to Apr 16Apr 2
MonroevilleJan 28 to Feb 11Apr 29 to May 6Apr 22
WilliamsportJan 31 to Feb 14May 2 to May 9Apr 25
LebanonJan 26 to Feb 9Apr 27 to May 4Apr 20
PlumJan 22 to Feb 5Apr 23 to Apr 30Apr 16
King of PrussiaJan 14 to Jan 28Apr 15 to Apr 22Apr 8
ChambersburgJan 24 to Feb 7Apr 25 to May 2Apr 18
PottstownJan 26 to Feb 9Apr 27 to May 4Apr 20
CarlisleJan 29 to Feb 12Apr 30 to May 7Apr 23
Allison ParkJan 22 to Feb 5Apr 23 to Apr 30Apr 16
New CastleFeb 5 to Feb 19May 7 to May 14Apr 30
MurrysvilleJan 28 to Feb 11Apr 29 to May 6Apr 22
BaldwinJan 24 to Feb 7Apr 25 to May 2Apr 18
PhoenixvilleJan 24 to Feb 7Apr 25 to May 2Apr 18

Questions

When should I plant celery in Pennsylvania?

In Philadelphia, plant out from April 6 to April 13. Across Pennsylvania the window opens between April 6 and May 7, depending on the local last frost.

How is this date worked out?

Start seeds indoors 10–12 weeks before the last frost; plant out 1–2 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Pennsylvania

Celery in other states

Frost dates for every city in Pennsylvania