When to plant spinach in Pennsylvania

Spinach
Sow outdoors in Philadelphia
Feb 16–Mar 9

Across Pennsylvania the window opens between February 16 and March 19. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Philadelphia
Feb 16–Mar 9
Fall planting, Philadelphia
Sep 22–Oct 6
Last frost, Philadelphia
Mar 30

Sow outdoors 3–6 weeks before the last frost; sow again for fall 6–8 weeks before the first frost. Spinach bolts as days lengthen. Early spring and fall are its seasons.

Spinach planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
PhiladelphiaFeb 16–Mar 9
PittsburghMar 7–Mar 28
AllentownMar 9–Mar 30
ReadingMar 3–Mar 24
ErieMar 15–Apr 5
BethlehemMar 9–Mar 30
ScrantonMar 12–Apr 2
LancasterMar 8–Mar 29
LevittownMar 10–Mar 31
HarrisburgMar 4–Mar 25
YorkMar 15–Apr 5
Wilkes-BarreMar 12–Apr 2
AltoonaMar 14–Apr 4
State CollegeMar 9–Mar 30
Penn HillsMar 5–Mar 26
NorristownFeb 25–Mar 18
ChesterFeb 16–Mar 9
Mount LebanonMar 7–Mar 28
Bethel ParkMar 7–Mar 28
EastonMar 7–Mar 28
HazletonMar 19–Apr 9
Drexel HillFeb 19–Mar 12
MonroevilleMar 11–Apr 1
WilliamsportMar 14–Apr 4
LebanonMar 9–Mar 30
PlumMar 5–Mar 26
King of PrussiaFeb 25–Mar 18
ChambersburgMar 7–Mar 28
PottstownMar 9–Mar 30
CarlisleMar 12–Apr 2
All 35 cities
CitySow outdoorsFall plantingLast frost
PhiladelphiaFeb 16 to Mar 9Sep 22 to Oct 6Mar 30
PittsburghMar 7 to Mar 28Sep 2 to Sep 16Apr 18
AllentownMar 9 to Mar 30Aug 29 to Sep 12Apr 20
ReadingMar 3 to Mar 24Sep 3 to Sep 17Apr 14
ErieMar 15 to Apr 5Sep 9 to Sep 23Apr 26
BethlehemMar 9 to Mar 30Aug 29 to Sep 12Apr 20
ScrantonMar 12 to Apr 2Aug 25 to Sep 8Apr 23
LancasterMar 8 to Mar 29Aug 29 to Sep 12Apr 19
LevittownMar 10 to Mar 31Aug 30 to Sep 13Apr 21
HarrisburgMar 4 to Mar 25Aug 28 to Sep 11Apr 15
YorkMar 15 to Apr 5Aug 24 to Sep 7Apr 26
Wilkes-BarreMar 12 to Apr 2Aug 25 to Sep 8Apr 23
AltoonaMar 14 to Apr 4Aug 26 to Sep 9Apr 25
State CollegeMar 9 to Mar 30Aug 31 to Sep 14Apr 20
Penn HillsMar 5 to Mar 26Sep 6 to Sep 20Apr 16
NorristownFeb 25 to Mar 18Sep 5 to Sep 19Apr 8
ChesterFeb 16 to Mar 9Sep 21 to Oct 5Mar 30
Mount LebanonMar 7 to Mar 28Sep 2 to Sep 16Apr 18
Bethel ParkMar 7 to Mar 28Sep 2 to Sep 16Apr 18
EastonMar 7 to Mar 28Aug 30 to Sep 13Apr 18
HazletonMar 19 to Apr 9Aug 27 to Sep 10Apr 30
Drexel HillFeb 19 to Mar 12Sep 15 to Sep 29Apr 2
MonroevilleMar 11 to Apr 1Aug 30 to Sep 13Apr 22
WilliamsportMar 14 to Apr 4Aug 29 to Sep 12Apr 25
LebanonMar 9 to Mar 30Aug 30 to Sep 13Apr 20
PlumMar 5 to Mar 26Sep 6 to Sep 20Apr 16
King of PrussiaFeb 25 to Mar 18Sep 5 to Sep 19Apr 8
ChambersburgMar 7 to Mar 28Aug 30 to Sep 13Apr 18
PottstownMar 9 to Mar 30Aug 28 to Sep 11Apr 20
CarlisleMar 12 to Apr 2Aug 23 to Sep 6Apr 23
Allison ParkMar 5 to Mar 26Sep 6 to Sep 20Apr 16
New CastleMar 19 to Apr 9Aug 28 to Sep 11Apr 30
MurrysvilleMar 11 to Apr 1Aug 30 to Sep 13Apr 22
BaldwinMar 7 to Mar 28Sep 2 to Sep 16Apr 18
PhoenixvilleMar 7 to Mar 28Sep 1 to Sep 15Apr 18

Questions

When should I plant spinach in Pennsylvania?

In Philadelphia, sow outdoors from February 16 to March 9. Across Pennsylvania the window opens between February 16 and March 19, depending on the local last frost.

How is this date worked out?

Sow outdoors 3–6 weeks before the last frost; sow again for fall 6–8 weeks before the first frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Pennsylvania

Spinach in other states

Frost dates for every city in Pennsylvania