When to plant collard greens in Oregon

Collard greens
Plant out in Portland
Jan 28–Feb 11

Across Oregon the window opens between January 14 and May 12. Find your city below; the dates follow each town's own average last frost.

Plant out, Portland
Jan 28–Feb 11
Fall planting, Portland
Sep 8–Sep 22
Last frost, Portland
Feb 25

Plant out 2–4 weeks before the last frost; sow again for fall 10–12 weeks before the first frost. Collards handle both heat and frost better than most greens.

Collard greens planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
PortlandJan 28–Feb 11
SalemMar 6–Mar 20
EugeneMar 14–Mar 28
GreshamFeb 16–Mar 2
HillsboroMar 19–Apr 2
BendMay 9–May 23
BeavertonMar 4–Mar 18
MedfordMar 11–Mar 25
CorvallisMar 20–Apr 3
SpringfieldMar 14–Mar 28
TigardMar 4–Mar 18
AlbanyMar 20–Apr 3
AlohaJan 14–Jan 28
Lake OswegoFeb 18–Mar 4
Grants PassMar 11–Mar 25
KeizerMar 6–Mar 20
RedmondMay 12–May 26
Oregon CityFeb 18–Mar 4
McMinnvilleMar 8–Mar 22
WoodburnFeb 16–Mar 2
BethanyJan 14–Jan 28
Happy ValleyFeb 18–Mar 4
TualatinMar 4–Mar 18
WilsonvilleFeb 18–Mar 4
Forest GroveMar 19–Apr 2
NewbergFeb 21–Mar 7
West LinnFeb 18–Mar 4
RoseburgFeb 23–Mar 9
HayesvilleMar 6–Mar 20
MilwaukieJan 28–Feb 11
All 34 cities
CityPlant outFall plantingLast frost
PortlandJan 28 to Feb 11Sep 8 to Sep 22Feb 25
SalemMar 6 to Mar 20Aug 9 to Aug 23Apr 3
EugeneMar 14 to Mar 28Jul 31 to Aug 14Apr 11
GreshamFeb 16 to Mar 2Aug 28 to Sep 11Mar 16
HillsboroMar 19 to Apr 2Jul 31 to Aug 14Apr 16
BendMay 9 to May 23Jun 6
BeavertonMar 4 to Mar 18Aug 14 to Aug 28Apr 1
MedfordMar 11 to Mar 25Aug 6 to Aug 20Apr 8
CorvallisMar 20 to Apr 3Aug 5 to Aug 19Apr 17
SpringfieldMar 14 to Mar 28Jul 31 to Aug 14Apr 11
TigardMar 4 to Mar 18Aug 14 to Aug 28Apr 1
AlbanyMar 20 to Apr 3Aug 5 to Aug 19Apr 17
AlohaJan 14 to Jan 28Sep 12 to Sep 26Feb 11
Lake OswegoFeb 18 to Mar 4Aug 26 to Sep 9Mar 18
Grants PassMar 11 to Mar 25Aug 5 to Aug 19Apr 8
KeizerMar 6 to Mar 20Aug 9 to Aug 23Apr 3
RedmondMay 12 to May 26Jun 9
Oregon CityFeb 18 to Mar 4Aug 26 to Sep 9Mar 18
McMinnvilleMar 8 to Mar 22Aug 15 to Aug 29Apr 5
WoodburnFeb 16 to Mar 2Aug 22 to Sep 5Mar 16
BethanyJan 14 to Jan 28Sep 12 to Sep 26Feb 11
Happy ValleyFeb 18 to Mar 4Aug 26 to Sep 9Mar 18
TualatinMar 4 to Mar 18Aug 14 to Aug 28Apr 1
WilsonvilleFeb 18 to Mar 4Aug 21 to Sep 4Mar 18
Forest GroveMar 19 to Apr 2Aug 3 to Aug 17Apr 16
NewbergFeb 21 to Mar 7Aug 30 to Sep 13Mar 21
West LinnFeb 18 to Mar 4Aug 26 to Sep 9Mar 18
RoseburgFeb 23 to Mar 9Aug 26 to Sep 9Mar 23
HayesvilleMar 6 to Mar 20Aug 9 to Aug 23Apr 3
MilwaukieJan 28 to Feb 11Sep 8 to Sep 22Feb 25
Klamath FallsMay 12 to May 26Jun 9
AshlandApr 8 to Apr 22Jul 16 to Jul 30May 6
SherwoodFeb 21 to Mar 7Aug 30 to Sep 13Mar 21
LebanonFeb 14 to Feb 28Aug 26 to Sep 9Mar 14

Questions

When should I plant collard greens in Oregon?

In Portland, plant out from January 28 to February 11. Across Oregon the window opens between January 14 and May 12, depending on the local last frost.

How is this date worked out?

Plant out 2–4 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

Collard greens in other states

Frost dates for every city in Oregon