When to plant Asparagus in Washington

In spring, from Jan 1 – Mar 1 in Anacortes to May 1 – June 1 in Cheney.

In fall, from Oct 20 – Nov 15 in Airway Heights to Dec 1 – Jan 1 in Vancouver.

Dates are for setting out plants. USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Asparagus planting dates by place in Washington
PlaceSpringFall
AberdeenFeb 15 – Mar 20Dec 1 – Jan 1Soon
Airway HeightsMar 20 – Apr 15Oct 20 – Nov 15Now
AnacortesJan 1 – Mar 1Not listed
ArlingtonMar 15 – Apr 15Nov 1 – Dec 15Soon
AuburnFeb 1 – Mar 10Dec 1 – Jan 1Soon
Bainbridge IslandFeb 15 – Mar 20Dec 1 – Jan 1Soon
Battle GroundMar 20 – Apr 15Nov 1 – Dec 15Soon
BellevueJan 1 – Mar 1Not listed
BellinghamFeb 15 – Mar 20Nov 15 – Jan 1Soon
Bonney LakeMar 10 – Apr 10Nov 15 – Jan 1Soon
BothellJan 1 – Mar 1Not listed
BremertonFeb 15 – Mar 20Dec 1 – Jan 1Soon
BurienNot listedNot listed
BurlingtonFeb 1 – Mar 10Nov 15 – Jan 1Soon
CamasFeb 1 – Mar 10Not listed
CentraliaMar 15 – Apr 15Nov 15 – Jan 1Soon
CheneyMay 1 – June 1Not listed
CovingtonMar 15 – Apr 15Nov 1 – Dec 15Soon
Des MoinesNot listedNot listed
East WenatcheeFeb 15 – Mar 20Nov 15 – Jan 1Soon
EdgewoodJan 1 – Mar 1Dec 1 – Jan 1Soon
EdmondsJan 1 – Mar 1Not listed
EllensburgApr 10 – 30Not listed
EnumclawMar 10 – Apr 10Nov 15 – Jan 1Soon
EverettFeb 1 – Mar 10Nov 15 – Jan 1Soon
Federal WayJan 1 – Mar 1Dec 1 – Jan 1Soon
FerndaleFeb 15 – Mar 20Nov 15 – Jan 1Soon
FifeJan 1 – Mar 1Dec 1 – Jan 1Soon
Gig HarborJan 1 – Mar 1Not listed
GrandviewMar 20 – Apr 15Oct 20 – Nov 15Now
IssaquahJan 1 – Mar 1Not listed
KelsoMar 10 – Apr 10Dec 1 – Jan 1Soon
KenmoreJan 1 – Mar 1Not listed
KennewickFeb 15 – Mar 20Nov 15 – Jan 1Soon
KentFeb 1 – Mar 10Dec 1 – Jan 1Soon
KirklandJan 1 – Mar 1Not listed
LaceyMar 20 – Apr 15Oct 20 – Nov 15Now
Lake Forest ParkJan 1 – Mar 1Not listed
Lake StevensFeb 1 – Mar 10Nov 15 – Jan 1Soon
LakewoodJan 1 – Mar 1Not listed
Liberty LakeMar 20 – Apr 15Oct 20 – Nov 15Now
LongviewMar 10 – Apr 10Dec 1 – Jan 1Soon
LyndenMar 15 – Apr 15Nov 1 – Dec 15Soon
LynnwoodJan 1 – Mar 1Not listed
Maple ValleyMar 15 – Apr 15Nov 1 – Dec 15Soon
MarysvilleFeb 1 – Mar 10Nov 15 – Jan 1Soon
Mercer IslandJan 1 – Mar 1Not listed
Mill CreekJan 1 – Mar 1Not listed
MonroeMar 15 – Apr 15Nov 1 – Dec 15Soon
Moses LakeMar 20 – Apr 15Oct 20 – Nov 15Now
Mount VernonFeb 1 – Mar 10Nov 15 – Jan 1Soon
Mountlake TerraceJan 1 – Mar 1Not listed
MukilteoJan 1 – Mar 1Not listed
NewcastleJan 1 – Mar 1Not listed
Oak HarborJan 1 – Mar 1Dec 1 – Jan 1Soon
OlympiaMar 20 – Apr 15Oct 20 – Nov 15Now
PascoMar 20 – Apr 15Oct 20 – Nov 15Now
Port AngelesJan 1 – Mar 1Not listed
Port OrchardFeb 15 – Mar 20Dec 1 – Jan 1Soon
Port TownsendNot listedNot listed
PoulsboFeb 15 – Mar 20Dec 1 – Jan 1Soon
PullmanApr 10 – 30Not listed
PuyallupMar 10 – Apr 10Nov 15 – Jan 1Soon
RedmondJan 1 – Mar 1Not listed
RentonJan 1 – Mar 1Not listed
RichlandMar 10 – Apr 10Nov 1 – Dec 15Soon
RidgefieldMar 20 – Apr 15Nov 1 – Dec 15Soon
SammamishFeb 15 – Mar 20Dec 1 – Jan 1Soon
SeaTacNot listedNot listed
SeattleJan 1 – Mar 1Not listed
Sedro-WoolleyFeb 15 – Mar 20Dec 1 – Jan 1Soon
SheltonMar 20 – Apr 15Nov 1 – Dec 15Soon
ShorelineJan 1 – Mar 1Not listed
SnohomishFeb 1 – Mar 10Nov 15 – Jan 1Soon
SnoqualmieFeb 15 – Mar 20Dec 1 – Jan 1Soon
SpokaneMar 20 – Apr 15Oct 20 – Nov 15Now
Spokane ValleyMar 20 – Apr 15Oct 20 – Nov 15Now
SumnerMar 10 – Apr 10Nov 15 – Jan 1Soon
SunnysideMar 20 – Apr 15Oct 20 – Nov 15Now
TacomaJan 1 – Mar 1Dec 1 – Jan 1Soon
TukwilaNot listedNot listed
TumwaterMar 20 – Apr 15Oct 20 – Nov 15Now
University PlaceJan 1 – Mar 1Not listed
VancouverFeb 15 – Mar 20Dec 1 – Jan 1Soon
Walla WallaFeb 15 – Mar 20Nov 15 – Jan 1Soon
WashougalFeb 15 – Mar 20Not listed
WenatcheeFeb 15 – Mar 20Nov 15 – Jan 1Soon
West RichlandMar 10 – Apr 10Nov 1 – Dec 15Soon
WoodinvilleJan 1 – Mar 1Not listed
YakimaMar 10 – Apr 10Nov 1 – Dec 15Soon
YelmMar 20 – Apr 15Oct 20 – Nov 15Now

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 asparagus.