FrostCal

When to Plant Spinach in Oregon

In a typical Oregon location, sow outdoors Feb 20 – Mar 6. Across the state, the outdoor planting window starts as early as Dec 31 in Beaverton and as late as Apr 28 in Altamont. For a fall crop, plant around Sep 11 – Sep 25.

Method Direct sow
Days to maturity 40–50 days

Very cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked.

Spinach Planting Dates by City

CityDirect sowFall planting
PortlandJan 14 – Jan 28Oct 6 – Oct 20
EugeneFeb 28 – Mar 14Aug 28 – Sep 11
SalemFeb 20 – Mar 6Sep 6 – Sep 20
GreshamFeb 2 – Feb 16Sep 25 – Oct 9
HillsboroMar 5 – Mar 19Aug 28 – Sep 11
BeavertonDec 31 – Jan 14Oct 10 – Oct 24
BendApr 25 – May 9Jul 26 – Aug 9
MedfordFeb 25 – Mar 11Sep 3 – Sep 17
SpringfieldFeb 28 – Mar 14Aug 28 – Sep 11
CorvallisMar 6 – Mar 20Sep 2 – Sep 16
AlbanyMar 6 – Mar 20Sep 2 – Sep 16
TigardFeb 18 – Mar 4Sep 11 – Sep 25
AlohaDec 31 – Jan 14Oct 10 – Oct 24
Lake OswegoFeb 4 – Feb 18Sep 23 – Oct 7
KeizerFeb 20 – Mar 6Sep 6 – Sep 20
Grants PassFeb 25 – Mar 11Sep 2 – Sep 16
Oregon CityFeb 4 – Feb 18Sep 23 – Oct 7
McMinnvilleFeb 22 – Mar 8Sep 12 – Sep 26
RedmondApr 28 – May 12Jul 20 – Aug 3
TualatinFeb 18 – Mar 4Sep 11 – Sep 25
West LinnFeb 4 – Feb 18Sep 23 – Oct 7
WoodburnFeb 2 – Feb 16Sep 19 – Oct 3
Forest GroveMar 5 – Mar 19Aug 31 – Sep 14
NewbergFeb 7 – Feb 21Sep 27 – Oct 11
WilsonvilleFeb 4 – Feb 18Sep 18 – Oct 2
RoseburgFeb 9 – Feb 23Sep 23 – Oct 7
Klamath FallsApr 28 – May 12Jul 24 – Aug 7
AshlandMar 25 – Apr 8Aug 13 – Aug 27
MilwaukieJan 14 – Jan 28Oct 6 – Oct 20
BethanyMar 5 – Mar 19Aug 28 – Sep 11

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 spinach in Oregon?

In a typical Oregon location, sow outdoors Feb 20 – Mar 6. Across the state, the outdoor planting window starts as early as Dec 31 in Beaverton and as late as Apr 28 in Altamont. For a fall crop, plant around Sep 11 – Sep 25.

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 spinach take to grow?

Spinach typically take 40–50 days from planting to harvest. Very cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked.

Other Crops in Oregon

When to plant spinach in other states

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