When to plant cauliflower in Oregon

Cauliflower
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 17–Dec 31
Plant out, Portland
Feb 11–Feb 25
Fall planting, Portland
Sep 8–Sep 22
Last frost, Portland
Feb 25

Start seeds indoors 8–10 weeks before the last frost; plant out up to 2 weeks before the last frost; sow again for fall 10–12 weeks before the first frost. When heads reach the size of an egg, tie the leaves over them to keep them white.

Cauliflower 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
CityStart indoorsPlant outFall plantingLast frost
PortlandDec 17 to Dec 31Feb 11 to Feb 25Sep 8 to Sep 22Feb 25
SalemJan 23 to Feb 6Mar 20 to Apr 3Aug 9 to Aug 23Apr 3
EugeneJan 31 to Feb 14Mar 28 to Apr 11Jul 31 to Aug 14Apr 11
GreshamJan 5 to Jan 19Mar 2 to Mar 16Aug 28 to Sep 11Mar 16
HillsboroFeb 5 to Feb 19Apr 2 to Apr 16Jul 31 to Aug 14Apr 16
BendMar 28 to Apr 11May 23 to Jun 6Jun 6
BeavertonJan 21 to Feb 4Mar 18 to Apr 1Aug 14 to Aug 28Apr 1
MedfordJan 28 to Feb 11Mar 25 to Apr 8Aug 6 to Aug 20Apr 8
CorvallisFeb 6 to Feb 20Apr 3 to Apr 17Aug 5 to Aug 19Apr 17
SpringfieldJan 31 to Feb 14Mar 28 to Apr 11Jul 31 to Aug 14Apr 11
TigardJan 21 to Feb 4Mar 18 to Apr 1Aug 14 to Aug 28Apr 1
AlbanyFeb 6 to Feb 20Apr 3 to Apr 17Aug 5 to Aug 19Apr 17
AlohaDec 3 to Dec 17Jan 28 to Feb 11Sep 12 to Sep 26Feb 11
Lake OswegoJan 7 to Jan 21Mar 4 to Mar 18Aug 26 to Sep 9Mar 18
Grants PassJan 28 to Feb 11Mar 25 to Apr 8Aug 5 to Aug 19Apr 8
KeizerJan 23 to Feb 6Mar 20 to Apr 3Aug 9 to Aug 23Apr 3
RedmondMar 31 to Apr 14May 26 to Jun 9Jun 9
Oregon CityJan 7 to Jan 21Mar 4 to Mar 18Aug 26 to Sep 9Mar 18
McMinnvilleJan 25 to Feb 8Mar 22 to Apr 5Aug 15 to Aug 29Apr 5
WoodburnJan 5 to Jan 19Mar 2 to Mar 16Aug 22 to Sep 5Mar 16
BethanyDec 3 to Dec 17Jan 28 to Feb 11Sep 12 to Sep 26Feb 11
Happy ValleyJan 7 to Jan 21Mar 4 to Mar 18Aug 26 to Sep 9Mar 18
TualatinJan 21 to Feb 4Mar 18 to Apr 1Aug 14 to Aug 28Apr 1
WilsonvilleJan 7 to Jan 21Mar 4 to Mar 18Aug 21 to Sep 4Mar 18
Forest GroveFeb 5 to Feb 19Apr 2 to Apr 16Aug 3 to Aug 17Apr 16
NewbergJan 10 to Jan 24Mar 7 to Mar 21Aug 30 to Sep 13Mar 21
West LinnJan 7 to Jan 21Mar 4 to Mar 18Aug 26 to Sep 9Mar 18
RoseburgJan 12 to Jan 26Mar 9 to Mar 23Aug 26 to Sep 9Mar 23
HayesvilleJan 23 to Feb 6Mar 20 to Apr 3Aug 9 to Aug 23Apr 3
MilwaukieDec 17 to Dec 31Feb 11 to Feb 25Sep 8 to Sep 22Feb 25
Klamath FallsMar 31 to Apr 14May 26 to Jun 9Jun 9
AshlandFeb 25 to Mar 11Apr 22 to May 6Jul 16 to Jul 30May 6
SherwoodJan 10 to Jan 24Mar 7 to Mar 21Aug 30 to Sep 13Mar 21
LebanonJan 3 to Jan 17Feb 28 to Mar 14Aug 26 to Sep 9Mar 14

Questions

When should I plant cauliflower 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 8–10 weeks before the last frost; plant out up to 2 weeks before the last frost; sow again for fall 10–12 weeks before the first frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Oregon

Cauliflower in other states

Frost dates for every city in Oregon