When to plant cucumbers in Washington

Plant out in Seattle

Mar 22–Mar 29

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.

Start indoors, Seattle: Feb 8–Feb 15
Plant out, Seattle: Mar 22–Mar 29
Sow outdoors, Seattle: Mar 15–Mar 29
Last sowing for a harvest: Aug 31
Last frost, Seattle: Mar 8

Start seeds indoors 3–4 weeks before the last frost; plant out 2–3 weeks after the last frost; sow outdoors 1–3 weeks after the last frost. Cucumbers rot in cold soil. Sow when the soil is at least 65°F.

Cucumbers planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost

JanFebMarAprMayJunJulAugSepOctNovDec

SeattleMar 22–Mar 29

SpokaneMay 10–May 17

TacomaMar 22–Mar 29

VancouverApr 12–Apr 19

BellevueMar 22–Mar 29

KentApr 3–Apr 10

EverettApr 7–Apr 14

Spokane ValleyMay 10–May 17

RentonMar 27–Apr 3

Federal WayMar 22–Mar 29

YakimaApr 22–Apr 29

KirklandMar 22–Mar 29

BellinghamApr 15–Apr 22

KennewickApr 11–Apr 18

AuburnApr 3–Apr 10

PascoMay 11–May 18

RedmondMar 22–Mar 29

MarysvilleApr 7–Apr 14

South HillApr 25–May 2

ShorelineMar 22–Mar 29

SammamishApr 13–Apr 20

RichlandApr 20–Apr 27

LakewoodMar 25–Apr 1

LaceyMay 13–May 20

OlympiaMay 13–May 20

BothellMar 22–Mar 29

BurienMar 16–Mar 23

BremertonApr 12–Apr 19

EdmondsMar 23–Mar 30

PuyallupApr 25–May 2

All 76 cities

City	Start indoors	Plant out	Sow outdoors	Last frost
Seattle	Feb 8 to Feb 15	Mar 22 to Mar 29	Mar 15 to Mar 29	Mar 8
Spokane	Mar 29 to Apr 5	May 10 to May 17	May 3 to May 17	Apr 26
Tacoma	Feb 8 to Feb 15	Mar 22 to Mar 29	Mar 15 to Mar 29	Mar 8
Vancouver	Mar 1 to Mar 8	Apr 12 to Apr 19	Apr 5 to Apr 19	Mar 29
Bellevue	Feb 8 to Feb 15	Mar 22 to Mar 29	Mar 15 to Mar 29	Mar 8
Kent	Feb 20 to Feb 27	Apr 3 to Apr 10	Mar 27 to Apr 10	Mar 20
Everett	Feb 24 to Mar 3	Apr 7 to Apr 14	Mar 31 to Apr 14	Mar 24
Spokane Valley	Mar 29 to Apr 5	May 10 to May 17	May 3 to May 17	Apr 26
Renton	Feb 13 to Feb 20	Mar 27 to Apr 3	Mar 20 to Apr 3	Mar 13
Federal Way	Feb 8 to Feb 15	Mar 22 to Mar 29	Mar 15 to Mar 29	Mar 8
Yakima	Mar 11 to Mar 18	Apr 22 to Apr 29	Apr 15 to Apr 29	Apr 8
Kirkland	Feb 8 to Feb 15	Mar 22 to Mar 29	Mar 15 to Mar 29	Mar 8
Bellingham	Mar 4 to Mar 11	Apr 15 to Apr 22	Apr 8 to Apr 22	Apr 1
Kennewick	Feb 28 to Mar 7	Apr 11 to Apr 18	Apr 4 to Apr 18	Mar 28
Auburn	Feb 20 to Feb 27	Apr 3 to Apr 10	Mar 27 to Apr 10	Mar 20
Pasco	Mar 30 to Apr 6	May 11 to May 18	May 4 to May 18	Apr 27
Redmond	Feb 8 to Feb 15	Mar 22 to Mar 29	Mar 15 to Mar 29	Mar 8
Marysville	Feb 24 to Mar 3	Apr 7 to Apr 14	Mar 31 to Apr 14	Mar 24
South Hill	Mar 14 to Mar 21	Apr 25 to May 2	Apr 18 to May 2	Apr 11
Shoreline	Feb 8 to Feb 15	Mar 22 to Mar 29	Mar 15 to Mar 29	Mar 8
Sammamish	Mar 2 to Mar 9	Apr 13 to Apr 20	Apr 6 to Apr 20	Mar 30
Richland	Mar 9 to Mar 16	Apr 20 to Apr 27	Apr 13 to Apr 27	Apr 6
Lakewood	Feb 11 to Feb 18	Mar 25 to Apr 1	Mar 18 to Apr 1	Mar 11
Lacey	Apr 1 to Apr 8	May 13 to May 20	May 6 to May 20	Apr 29
Olympia	Apr 1 to Apr 8	May 13 to May 20	May 6 to May 20	Apr 29
Bothell	Feb 8 to Feb 15	Mar 22 to Mar 29	Mar 15 to Mar 29	Mar 8
Burien	Feb 2 to Feb 9	Mar 16 to Mar 23	Mar 9 to Mar 23	Mar 2
Bremerton	Mar 1 to Mar 8	Apr 12 to Apr 19	Apr 5 to Apr 19	Mar 29
Edmonds	Feb 9 to Feb 16	Mar 23 to Mar 30	Mar 16 to Mar 30	Mar 9
Puyallup	Mar 14 to Mar 21	Apr 25 to May 2	Apr 18 to May 2	Apr 11
Lynnwood	Feb 9 to Feb 16	Mar 23 to Mar 30	Mar 16 to Mar 30	Mar 9
Lake Stevens	Feb 24 to Mar 3	Apr 7 to Apr 14	Mar 31 to Apr 14	Mar 24
Issaquah	Feb 13 to Feb 20	Mar 27 to Apr 3	Mar 20 to Apr 3	Mar 13
Parkland	Feb 8 to Feb 15	Mar 22 to Mar 29	Mar 15 to Mar 29	Mar 8
Longview	Mar 11 to Mar 18	Apr 22 to Apr 29	Apr 15 to Apr 29	Apr 8
Wenatchee	Mar 7 to Mar 14	Apr 18 to Apr 25	Apr 11 to Apr 25	Apr 4
University Place	Feb 11 to Feb 18	Mar 25 to Apr 1	Mar 18 to Apr 1	Mar 11
Mount Vernon	Feb 24 to Mar 3	Apr 7 to Apr 14	Mar 31 to Apr 14	Mar 24
Graham	Mar 14 to Mar 21	Apr 25 to May 2	Apr 18 to May 2	Apr 11
SeaTac	Feb 2 to Feb 9	Mar 16 to Mar 23	Mar 9 to Mar 23	Mar 2
Spanaway	Mar 14 to Mar 21	Apr 25 to May 2	Apr 18 to May 2	Apr 11
Walla Walla	Feb 27 to Mar 6	Apr 10 to Apr 17	Apr 3 to Apr 17	Mar 27
Pullman	Apr 8 to Apr 15	May 20 to May 27	May 13 to May 27	May 6
Des Moines	Feb 2 to Feb 9	Mar 16 to Mar 23	Mar 9 to Mar 23	Mar 2
Orchards	Mar 29 to Apr 5	May 10 to May 17	May 3 to May 17	Apr 26
Maple Valley	Mar 23 to Mar 30	May 4 to May 11	Apr 27 to May 11	Apr 20
Tumwater	Apr 1 to Apr 8	May 13 to May 20	May 6 to May 20	Apr 29
Camas	Feb 16 to Feb 23	Mar 30 to Apr 6	Mar 23 to Apr 6	Mar 16
Moses Lake	Mar 30 to Apr 6	May 11 to May 18	May 4 to May 18	Apr 27
Mill Creek East	Feb 9 to Feb 16	Mar 23 to Mar 30	Mar 16 to Mar 30	Mar 9
Mountlake Terrace	Feb 8 to Feb 15	Mar 22 to Mar 29	Mar 15 to Mar 29	Mar 8
Mercer Island	Feb 13 to Feb 20	Mar 27 to Apr 3	Mar 20 to Apr 3	Mar 13
Bainbridge Island	Mar 1 to Mar 8	Apr 12 to Apr 19	Apr 5 to Apr 19	Mar 29
Kenmore	Feb 8 to Feb 15	Mar 22 to Mar 29	Mar 15 to Mar 29	Mar 8
Frederickson	Mar 14 to Mar 21	Apr 25 to May 2	Apr 18 to May 2	Apr 11
Oak Harbor	Feb 13 to Feb 20	Mar 27 to Apr 3	Mar 20 to Apr 3	Mar 13
North Lynnwood	Feb 9 to Feb 16	Mar 23 to Mar 30	Mar 16 to Mar 30	Mar 9
Battle Ground	Mar 29 to Apr 5	May 10 to May 17	May 3 to May 17	Apr 26
Eastmont	Feb 9 to Feb 16	Mar 23 to Mar 30	Mar 16 to Mar 30	Mar 9
Union Hill-Novelty Hill	Feb 8 to Feb 15	Mar 22 to Mar 29	Mar 15 to Mar 29	Mar 8
Cottage Lake	Mar 20 to Mar 27	May 1 to May 8	Apr 24 to May 8	Apr 17
Hazel Dell	Mar 29 to Apr 5	May 10 to May 17	May 3 to May 17	Apr 26
Martha Lake	Feb 9 to Feb 16	Mar 23 to Mar 30	Mar 16 to Mar 30	Mar 9
Bonney Lake	Mar 14 to Mar 21	Apr 25 to May 2	Apr 18 to May 2	Apr 11
Arlington	Mar 25 to Apr 1	May 6 to May 13	Apr 29 to May 13	Apr 22
Tukwila	Feb 2 to Feb 9	Mar 16 to Mar 23	Mar 9 to Mar 23	Mar 2
Silver Firs	Feb 9 to Feb 16	Mar 23 to Mar 30	Mar 16 to Mar 30	Mar 9
Covington	Mar 23 to Mar 30	May 4 to May 11	Apr 27 to May 11	Apr 20
Five Corners	Mar 29 to Apr 5	May 10 to May 17	May 3 to May 17	Apr 26
Ellensburg	Apr 10 to Apr 17	May 22 to May 29	May 15 to May 29	May 8
Mukilteo	Feb 9 to Feb 16	Mar 23 to Mar 30	Mar 16 to Mar 30	Mar 9
Silverdale	Mar 1 to Mar 8	Apr 12 to Apr 19	Apr 5 to Apr 19	Mar 29
Bothell West	Feb 9 to Feb 16	Mar 23 to Mar 30	Mar 16 to Mar 30	Mar 9
Mill Creek	Feb 9 to Feb 16	Mar 23 to Mar 30	Mar 16 to Mar 30	Mar 9
Port Angeles	Feb 12 to Feb 19	Mar 26 to Apr 2	Mar 19 to Apr 2	Mar 12
Monroe	Mar 20 to Mar 27	May 1 to May 8	Apr 24 to May 8	Apr 17

Questions

When should I plant cucumbers in Washington?

In Seattle, plant out from March 22 to March 29. Across Washington the window opens between March 16 and May 22, depending on the local last frost.

How is this date worked out?

Start seeds indoors 3–4 weeks before the last frost; plant out 2–3 weeks after the last frost; sow outdoors 1–3 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Washington

Cucumbers in other states

Frost dates for every city in Washington