When to plant Kale in Washington

In spring, from Feb 1 – 20 in Burien to May 1 – 30 in Cheney.

In fall, from May 15 – June 15 in Cheney to Sept 1 – Dec 1 in Port Townsend.

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

Kale planting dates by place in Washington
PlaceSpringFall
AberdeenMar 1 – 20Aug 1 – Sept 15
Airway HeightsApr 1 – 20July 1 – Aug 1
AnacortesFeb 10 – Mar 1Aug 15 – Oct 15
ArlingtonMar 20 – Apr 10July 15 – Aug 15
AuburnFeb 20 – Mar 10Aug 1 – Sept 15
Bainbridge IslandMar 1 – 20Aug 1 – Sept 15
Battle GroundApr 1 – 20July 15 – Aug 15
BellevueFeb 10 – Mar 1Aug 15 – Oct 15
BellinghamMar 1 – 20July 15 – Sept 1
Bonney LakeMar 10 – Apr 1July 15 – Sept 1
BothellFeb 10 – Mar 1Aug 15 – Oct 15
BremertonMar 1 – 20Aug 1 – Sept 15
BurienFeb 1 – 20Aug 15 – Oct 15
BurlingtonFeb 20 – Mar 10July 15 – Sept 1
CamasFeb 20 – Mar 10Aug 15 – Oct 15
CentraliaMar 20 – Apr 10July 15 – Sept 1
CheneyMay 1 – 30May 15 – June 15
CovingtonMar 20 – Apr 10July 15 – Aug 15
Des MoinesFeb 1 – 20Aug 15 – Oct 15
East WenatcheeMar 1 – 20July 15 – Sept 1
EdgewoodFeb 10 – Mar 1Aug 1 – Sept 15
EdmondsFeb 10 – Mar 1Aug 15 – Oct 15
EllensburgApr 10 – May 1June 15 – July 15
EnumclawMar 10 – Apr 1July 15 – Sept 1
EverettFeb 20 – Mar 10July 15 – Sept 1
Federal WayFeb 10 – Mar 1Aug 1 – Sept 15
FerndaleMar 1 – 20July 15 – Sept 1
FifeFeb 10 – Mar 1Aug 1 – Sept 15
Gig HarborFeb 10 – Mar 1Aug 15 – Oct 15
GrandviewApr 1 – 20July 1 – Aug 1
IssaquahFeb 10 – Mar 1Aug 15 – Oct 15
KelsoMar 10 – Apr 1Aug 1 – Sept 15
KenmoreFeb 10 – Mar 1Aug 15 – Oct 15
KennewickMar 1 – 20July 15 – Sept 1
KentFeb 20 – Mar 10Aug 1 – Sept 15
KirklandFeb 10 – Mar 1Aug 15 – Oct 15
LaceyApr 1 – 20July 1 – Aug 1
Lake Forest ParkFeb 10 – Mar 1Aug 15 – Oct 15
Lake StevensFeb 20 – Mar 10July 15 – Sept 1
LakewoodFeb 10 – Mar 1Aug 15 – Oct 15
Liberty LakeApr 1 – 20July 1 – Aug 1
LongviewMar 10 – Apr 1Aug 1 – Sept 15
LyndenMar 20 – Apr 10July 15 – Aug 15
LynnwoodFeb 10 – Mar 1Aug 15 – Oct 15
Maple ValleyMar 20 – Apr 10July 15 – Aug 15
MarysvilleFeb 20 – Mar 10July 15 – Sept 1
Mercer IslandFeb 10 – Mar 1Aug 15 – Oct 15
Mill CreekFeb 10 – Mar 1Aug 15 – Oct 15
MonroeMar 20 – Apr 10July 15 – Aug 15
Moses LakeApr 1 – 20July 1 – Aug 1
Mount VernonFeb 20 – Mar 10July 15 – Sept 1
Mountlake TerraceFeb 10 – Mar 1Aug 15 – Oct 15
MukilteoFeb 10 – Mar 1Aug 15 – Oct 15
NewcastleFeb 10 – Mar 1Aug 15 – Oct 15
Oak HarborFeb 10 – Mar 1Aug 1 – Sept 15
OlympiaApr 1 – 20July 1 – Aug 1
PascoApr 1 – 20July 1 – Aug 1
Port AngelesFeb 10 – Mar 1Aug 15 – Oct 15
Port OrchardMar 1 – 20Aug 1 – Sept 15
Port TownsendFeb 1 – 20Sept 1 – Dec 1Now
PoulsboMar 1 – 20Aug 1 – Sept 15
PullmanApr 10 – May 1June 15 – July 15
PuyallupMar 10 – Apr 1July 15 – Sept 1
RedmondFeb 10 – Mar 1Aug 15 – Oct 15
RentonFeb 10 – Mar 1Aug 15 – Oct 15
RichlandMar 10 – Apr 1July 15 – Aug 15
RidgefieldApr 1 – 20July 15 – Aug 15
SammamishMar 1 – 20Aug 1 – Sept 15
SeaTacFeb 1 – 20Aug 15 – Oct 15
SeattleFeb 10 – Mar 1Aug 15 – Oct 15
Sedro-WoolleyMar 1 – 20Aug 1 – Sept 15
SheltonApr 1 – 20July 15 – Aug 15
ShorelineFeb 10 – Mar 1Aug 15 – Oct 15
SnohomishFeb 20 – Mar 10July 15 – Sept 1
SnoqualmieMar 1 – 20Aug 1 – Sept 15
SpokaneApr 1 – 20July 1 – Aug 1
Spokane ValleyApr 1 – 20July 1 – Aug 1
SumnerMar 10 – Apr 1July 15 – Sept 1
SunnysideApr 1 – 20July 1 – Aug 1
TacomaFeb 10 – Mar 1Aug 1 – Sept 15
TukwilaFeb 1 – 20Aug 15 – Oct 15
TumwaterApr 1 – 20July 1 – Aug 1
University PlaceFeb 10 – Mar 1Aug 15 – Oct 15
VancouverMar 1 – 20Aug 1 – Sept 15
Walla WallaMar 1 – 20July 15 – Sept 1
WashougalMar 1 – 20Aug 15 – Oct 15
WenatcheeMar 1 – 20July 15 – Sept 1
West RichlandMar 10 – Apr 1July 15 – Aug 15
WoodinvilleFeb 10 – Mar 1Aug 15 – Oct 15
YakimaMar 10 – Apr 1July 15 – Aug 15
YelmApr 1 – 20July 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. “—” means the place's frost date is outside the table. The full USDA table for kale.