FrostCal

When to Plant Brussels Sprouts in Oregon

In a typical Oregon location, start seeds indoors Feb 13 – Feb 27, then transplant outdoors Mar 13 – Mar 27. Across the state, the outdoor planting window starts as early as Jan 21 in Beaverton and as late as May 19 in Altamont.

Method Start indoors, then transplant
Days to maturity 90–110 days

Long-season crop best timed to mature after a light fall frost for sweetest flavor; start indoors 5-7 weeks before last frost.

Brussels Sprouts Planting Dates by City

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

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 Brussels sprouts in Oregon?

In a typical Oregon location, start seeds indoors Feb 13 – Feb 27, then transplant outdoors Mar 13 – Mar 27. Across the state, the outdoor planting window starts as early as Jan 21 in Beaverton and as late as May 19 in Altamont.

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 Brussels sprouts take to grow?

Brussels Sprouts typically take 90–110 days from planting to harvest. Long-season crop best timed to mature after a light fall frost for sweetest flavor; start indoors 5-7 weeks before last frost.

Other Crops in Oregon

When to plant Brussels sprouts in other states

Related Guides