When to plant pumpkins in Washington

Pumpkins
Sow outdoors in Seattle
Mar 22–Apr 5

Across Washington the window opens between March 16 and May 22. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Seattle
Mar 22–Apr 5
Last sowing for a harvest
Jul 12
Last frost, Seattle
Mar 8

Sow outdoors 2–4 weeks after the last frost. For Halloween pumpkins, count back the variety's days to maturity from late September.

Pumpkins planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
SeattleMar 22–Apr 5
SpokaneMay 10–May 24
TacomaMar 22–Apr 5
VancouverApr 12–Apr 26
BellevueMar 22–Apr 5
KentApr 3–Apr 17
EverettApr 7–Apr 21
Spokane ValleyMay 10–May 24
RentonMar 27–Apr 10
Federal WayMar 22–Apr 5
YakimaApr 22–May 6
KirklandMar 22–Apr 5
BellinghamApr 15–Apr 29
KennewickApr 11–Apr 25
AuburnApr 3–Apr 17
PascoMay 11–May 25
RedmondMar 22–Apr 5
MarysvilleApr 7–Apr 21
South HillApr 25–May 9
ShorelineMar 22–Apr 5
SammamishApr 13–Apr 27
RichlandApr 20–May 4
LakewoodMar 25–Apr 8
LaceyMay 13–May 27
OlympiaMay 13–May 27
BothellMar 22–Apr 5
BurienMar 16–Mar 30
BremertonApr 12–Apr 26
EdmondsMar 23–Apr 6
PuyallupApr 25–May 9
All 76 cities
CitySow outdoorsLast frost
SeattleMar 22 to Apr 5Mar 8
SpokaneMay 10 to May 24Apr 26
TacomaMar 22 to Apr 5Mar 8
VancouverApr 12 to Apr 26Mar 29
BellevueMar 22 to Apr 5Mar 8
KentApr 3 to Apr 17Mar 20
EverettApr 7 to Apr 21Mar 24
Spokane ValleyMay 10 to May 24Apr 26
RentonMar 27 to Apr 10Mar 13
Federal WayMar 22 to Apr 5Mar 8
YakimaApr 22 to May 6Apr 8
KirklandMar 22 to Apr 5Mar 8
BellinghamApr 15 to Apr 29Apr 1
KennewickApr 11 to Apr 25Mar 28
AuburnApr 3 to Apr 17Mar 20
PascoMay 11 to May 25Apr 27
RedmondMar 22 to Apr 5Mar 8
MarysvilleApr 7 to Apr 21Mar 24
South HillApr 25 to May 9Apr 11
ShorelineMar 22 to Apr 5Mar 8
SammamishApr 13 to Apr 27Mar 30
RichlandApr 20 to May 4Apr 6
LakewoodMar 25 to Apr 8Mar 11
LaceyMay 13 to May 27Apr 29
OlympiaMay 13 to May 27Apr 29
BothellMar 22 to Apr 5Mar 8
BurienMar 16 to Mar 30Mar 2
BremertonApr 12 to Apr 26Mar 29
EdmondsMar 23 to Apr 6Mar 9
PuyallupApr 25 to May 9Apr 11
LynnwoodMar 23 to Apr 6Mar 9
Lake StevensApr 7 to Apr 21Mar 24
IssaquahMar 27 to Apr 10Mar 13
ParklandMar 22 to Apr 5Mar 8
LongviewApr 22 to May 6Apr 8
WenatcheeApr 18 to May 2Apr 4
University PlaceMar 25 to Apr 8Mar 11
Mount VernonApr 7 to Apr 21Mar 24
GrahamApr 25 to May 9Apr 11
SeaTacMar 16 to Mar 30Mar 2
SpanawayApr 25 to May 9Apr 11
Walla WallaApr 10 to Apr 24Mar 27
PullmanMay 20 to Jun 3May 6
Des MoinesMar 16 to Mar 30Mar 2
OrchardsMay 10 to May 24Apr 26
Maple ValleyMay 4 to May 18Apr 20
TumwaterMay 13 to May 27Apr 29
CamasMar 30 to Apr 13Mar 16
Moses LakeMay 11 to May 25Apr 27
Mill Creek EastMar 23 to Apr 6Mar 9
Mountlake TerraceMar 22 to Apr 5Mar 8
Mercer IslandMar 27 to Apr 10Mar 13
Bainbridge IslandApr 12 to Apr 26Mar 29
KenmoreMar 22 to Apr 5Mar 8
FredericksonApr 25 to May 9Apr 11
Oak HarborMar 27 to Apr 10Mar 13
North LynnwoodMar 23 to Apr 6Mar 9
Battle GroundMay 10 to May 24Apr 26
EastmontMar 23 to Apr 6Mar 9
Union Hill-Novelty HillMar 22 to Apr 5Mar 8
Cottage LakeMay 1 to May 15Apr 17
Hazel DellMay 10 to May 24Apr 26
Martha LakeMar 23 to Apr 6Mar 9
Bonney LakeApr 25 to May 9Apr 11
ArlingtonMay 6 to May 20Apr 22
TukwilaMar 16 to Mar 30Mar 2
Silver FirsMar 23 to Apr 6Mar 9
CovingtonMay 4 to May 18Apr 20
Five CornersMay 10 to May 24Apr 26
EllensburgMay 22 to Jun 5May 8
MukilteoMar 23 to Apr 6Mar 9
SilverdaleApr 12 to Apr 26Mar 29
Bothell WestMar 23 to Apr 6Mar 9
Mill CreekMar 23 to Apr 6Mar 9
Port AngelesMar 26 to Apr 9Mar 12
MonroeMay 1 to May 15Apr 17

Questions

When should I plant pumpkins in Washington?

In Seattle, sow outdoors from March 22 to April 5. Across Washington the window opens between March 16 and May 22, depending on the local last frost.

How is this date worked out?

Sow outdoors 2–4 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Washington

Pumpkins in other states

Frost dates for every city in Washington