When to plant leeks in Oregon

Plant out in Portland

Feb 11–Feb 25

Across Oregon the window opens between January 28 and May 26. Find your city below; the dates follow each town's own average last frost.

Start indoors, Portland: Dec 3–Dec 17
Plant out, Portland: Feb 11–Feb 25
Last frost, Portland: Feb 25

Start seeds indoors 10–12 weeks before the last frost; plant out up to 2 weeks before the last frost. Plant leeks deep in a trench and fill it in as they grow to get long white stems.

Leeks planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost

JanFebMarAprMayJunJulAugSepOctNovDec

PortlandFeb 11–Feb 25

SalemMar 20–Apr 3

EugeneMar 28–Apr 11

GreshamMar 2–Mar 16

HillsboroApr 2–Apr 16

BendMay 23–Jun 6

BeavertonMar 18–Apr 1

MedfordMar 25–Apr 8

CorvallisApr 3–Apr 17

SpringfieldMar 28–Apr 11

TigardMar 18–Apr 1

AlbanyApr 3–Apr 17

AlohaJan 28–Feb 11

Lake OswegoMar 4–Mar 18

Grants PassMar 25–Apr 8

KeizerMar 20–Apr 3

RedmondMay 26–Jun 9

Oregon CityMar 4–Mar 18

McMinnvilleMar 22–Apr 5

WoodburnMar 2–Mar 16

BethanyJan 28–Feb 11

Happy ValleyMar 4–Mar 18

TualatinMar 18–Apr 1

WilsonvilleMar 4–Mar 18

Forest GroveApr 2–Apr 16

NewbergMar 7–Mar 21

West LinnMar 4–Mar 18

RoseburgMar 9–Mar 23

HayesvilleMar 20–Apr 3

MilwaukieFeb 11–Feb 25

All 34 cities

City	Start indoors	Plant out	Last frost
Portland	Dec 3 to Dec 17	Feb 11 to Feb 25	Feb 25
Salem	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Eugene	Jan 17 to Jan 31	Mar 28 to Apr 11	Apr 11
Gresham	Dec 22 to Jan 5	Mar 2 to Mar 16	Mar 16
Hillsboro	Jan 22 to Feb 5	Apr 2 to Apr 16	Apr 16
Bend	Mar 14 to Mar 28	May 23 to Jun 6	Jun 6
Beaverton	Jan 7 to Jan 21	Mar 18 to Apr 1	Apr 1
Medford	Jan 14 to Jan 28	Mar 25 to Apr 8	Apr 8
Corvallis	Jan 23 to Feb 6	Apr 3 to Apr 17	Apr 17
Springfield	Jan 17 to Jan 31	Mar 28 to Apr 11	Apr 11
Tigard	Jan 7 to Jan 21	Mar 18 to Apr 1	Apr 1
Albany	Jan 23 to Feb 6	Apr 3 to Apr 17	Apr 17
Aloha	Nov 19 to Dec 3	Jan 28 to Feb 11	Feb 11
Lake Oswego	Dec 24 to Jan 7	Mar 4 to Mar 18	Mar 18
Grants Pass	Jan 14 to Jan 28	Mar 25 to Apr 8	Apr 8
Keizer	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Redmond	Mar 17 to Mar 31	May 26 to Jun 9	Jun 9
Oregon City	Dec 24 to Jan 7	Mar 4 to Mar 18	Mar 18
McMinnville	Jan 11 to Jan 25	Mar 22 to Apr 5	Apr 5
Woodburn	Dec 22 to Jan 5	Mar 2 to Mar 16	Mar 16
Bethany	Nov 19 to Dec 3	Jan 28 to Feb 11	Feb 11
Happy Valley	Dec 24 to Jan 7	Mar 4 to Mar 18	Mar 18
Tualatin	Jan 7 to Jan 21	Mar 18 to Apr 1	Apr 1
Wilsonville	Dec 24 to Jan 7	Mar 4 to Mar 18	Mar 18
Forest Grove	Jan 22 to Feb 5	Apr 2 to Apr 16	Apr 16
Newberg	Dec 27 to Jan 10	Mar 7 to Mar 21	Mar 21
West Linn	Dec 24 to Jan 7	Mar 4 to Mar 18	Mar 18
Roseburg	Dec 29 to Jan 12	Mar 9 to Mar 23	Mar 23
Hayesville	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Milwaukie	Dec 3 to Dec 17	Feb 11 to Feb 25	Feb 25
Klamath Falls	Mar 17 to Mar 31	May 26 to Jun 9	Jun 9
Ashland	Feb 11 to Feb 25	Apr 22 to May 6	May 6
Sherwood	Dec 27 to Jan 10	Mar 7 to Mar 21	Mar 21
Lebanon	Dec 20 to Jan 3	Feb 28 to Mar 14	Mar 14

Questions

When should I plant leeks in Oregon?

In Portland, plant out from February 11 to February 25. Across Oregon the window opens between January 28 and May 26, depending on the local last frost.

How is this date worked out?

Start seeds indoors 10–12 weeks before the last frost; plant out up to 2 weeks before the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Oregon

Leeks in other states

Frost dates for every city in Oregon