FrostCal

When to Plant Cauliflower in Oregon

In a typical Oregon location, start seeds indoors Feb 13 – Feb 27, then transplant outdoors Mar 20 – Mar 27. Across the state, the outdoor planting window starts as early as Jan 28 in Beaverton and as late as May 26 in Altamont. For a fall crop, plant around Aug 28 – Sep 4.

Method Start indoors, then transplant
Days to maturity 55–85 days

Fussier than broccoli about temperature swings; start indoors 5-7 weeks before last frost, transplant 1-2 weeks before last frost.

Cauliflower Planting Dates by City

CityStart indoorsTransplantFall planting
PortlandJan 7 – Jan 21Feb 11 – Feb 18Sep 22 – Sep 29
EugeneFeb 21 – Mar 7Mar 28 – Apr 4Aug 14 – Aug 21
SalemFeb 13 – Feb 27Mar 20 – Mar 27Aug 23 – Aug 30
GreshamJan 26 – Feb 9Mar 2 – Mar 9Sep 11 – Sep 18
HillsboroFeb 26 – Mar 12Apr 2 – Apr 9Aug 14 – Aug 21
BeavertonDec 24 – Jan 7Jan 28 – Feb 4Sep 26 – Oct 3
BendApr 18 – May 2May 23 – May 30Jul 12 – Jul 19
MedfordFeb 18 – Mar 4Mar 25 – Apr 1Aug 20 – Aug 27
SpringfieldFeb 21 – Mar 7Mar 28 – Apr 4Aug 14 – Aug 21
CorvallisFeb 27 – Mar 13Apr 3 – Apr 10Aug 19 – Aug 26
AlbanyFeb 27 – Mar 13Apr 3 – Apr 10Aug 19 – Aug 26
TigardFeb 11 – Feb 25Mar 18 – Mar 25Aug 28 – Sep 4
AlohaDec 24 – Jan 7Jan 28 – Feb 4Sep 26 – Oct 3
Lake OswegoJan 28 – Feb 11Mar 4 – Mar 11Sep 9 – Sep 16
KeizerFeb 13 – Feb 27Mar 20 – Mar 27Aug 23 – Aug 30
Grants PassFeb 18 – Mar 4Mar 25 – Apr 1Aug 19 – Aug 26
Oregon CityJan 28 – Feb 11Mar 4 – Mar 11Sep 9 – Sep 16
McMinnvilleFeb 15 – Mar 1Mar 22 – Mar 29Aug 29 – Sep 5
RedmondApr 21 – May 5May 26 – Jun 2Jul 6 – Jul 13
TualatinFeb 11 – Feb 25Mar 18 – Mar 25Aug 28 – Sep 4
West LinnJan 28 – Feb 11Mar 4 – Mar 11Sep 9 – Sep 16
WoodburnJan 26 – Feb 9Mar 2 – Mar 9Sep 5 – Sep 12
Forest GroveFeb 26 – Mar 12Apr 2 – Apr 9Aug 17 – Aug 24
NewbergJan 31 – Feb 14Mar 7 – Mar 14Sep 13 – Sep 20
WilsonvilleJan 28 – Feb 11Mar 4 – Mar 11Sep 4 – Sep 11
RoseburgFeb 2 – Feb 16Mar 9 – Mar 16Sep 9 – Sep 16
Klamath FallsApr 21 – May 5May 26 – Jun 2Jul 10 – Jul 17
AshlandMar 18 – Apr 1Apr 22 – Apr 29Jul 30 – Aug 6
MilwaukieJan 7 – Jan 21Feb 11 – Feb 18Sep 22 – Sep 29
BethanyFeb 26 – Mar 12Apr 2 – Apr 9Aug 14 – Aug 21

Showing the 30 most populous of 68 Oregon cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Oregon cities.

Frequently Asked Questions

When should I plant cauliflower in Oregon?

In a typical Oregon location, start seeds indoors Feb 13 – Feb 27, then transplant outdoors Mar 20 – Mar 27. Across the state, the outdoor planting window starts as early as Jan 28 in Beaverton and as late as May 26 in Altamont. For a fall crop, plant around Aug 28 – Sep 4.

When is the last frost in Oregon?

The average last spring frost in Oregon ranges from February 11 in Beaverton to June 9 in Altamont, based on NOAA 1991–2020 climate normals.

How long do cauliflower take to grow?

Cauliflower typically take 55–85 days from planting to harvest. Fussier than broccoli about temperature swings; start indoors 5-7 weeks before last frost, transplant 1-2 weeks before last frost.

Other Crops in Oregon

When to plant cauliflower in other states

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