When to plant Spinach in Oregon
In spring, from Jan 1 – Mar 1 in Coos Bay to May 1 – June 15 in Redmond.
In fall, from June 1 – July 15 in Baker City to Oct 1 – Dec 1 in West Linn.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Albany | Mar 1 – Apr 15 | Sept 1 – Oct 1 |
| Ashland | Apr 1 – June 15 | Aug 1 – Sept 1 |
| Baker City | Apr 10 – June 15 | June 1 – July 15 |
| Beaverton | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Bend | May 1 – June 15 | June 1 – Aug 1 |
| Canby | Jan 15 – Mar 15 | Sept 15 – Nov 1Now |
| Central Point | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Coos Bay | Jan 1 – Mar 1 | Oct 1 – Dec 31Now |
| Cornelius | Mar 1 – Apr 15 | Sept 1 – Oct 1 |
| Corvallis | Mar 1 – Apr 15 | Sept 1 – Oct 1 |
| Cottage Grove | Mar 1 – Apr 15 | Aug 20 – Sept 10 |
| Dallas | Mar 1 – Apr 15 | Sept 1 – Oct 1 |
| Eugene | Feb 15 – Apr 1 | Aug 20 – Sept 10 |
| Fairview | Jan 15 – Mar 15 | Oct 1 – Dec 1Now |
| Forest Grove | Mar 1 – Apr 15 | Sept 1 – Oct 1 |
| Gladstone | Jan 15 – Mar 15 | Oct 1 – Dec 1Now |
| Grants Pass | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Gresham | Jan 15 – Mar 15 | Oct 1 – Dec 1Now |
| Happy Valley | Jan 15 – Mar 15 | Oct 1 – Dec 1Now |
| Hermiston | Mar 20 – Apr 20 | Aug 1 – Sept 1 |
| Hillsboro | Mar 1 – Apr 15 | Aug 20 – Sept 10 |
| Independence | Mar 1 – Apr 15 | Sept 1 – Oct 1 |
| Keizer | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Klamath Falls | May 1 – June 15 | June 1 – Aug 1 |
| La Grande | Apr 1 – June 15 | July 1 – Aug 15 |
| Lake Oswego | Jan 15 – Mar 15 | Oct 1 – Dec 1Now |
| Lebanon | Jan 15 – Mar 10 | Oct 1 – Dec 1Now |
| Lincoln City | Feb 1 – Mar 20 | Oct 1 – Dec 1Now |
| McMinnville | Feb 15 – Apr 1 | Sept 15 – Nov 1Now |
| Medford | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Milwaukie | Jan 1 – Mar 1 | Oct 1 – Dec 31Now |
| Molalla | Jan 15 – Mar 15 | Oct 1 – Dec 1Now |
| Monmouth | Mar 1 – Apr 15 | Sept 1 – Oct 1 |
| Newberg | Jan 15 – Mar 15 | Oct 1 – Dec 1Now |
| Newport | Jan 1 – Mar 1 | Oct 1 – Dec 31Now |
| North Bend | Jan 1 – Mar 1 | Oct 1 – Dec 31Now |
| Ontario | Mar 1 – Apr 15 | Aug 1 – Sept 1 |
| Oregon City | Jan 15 – Mar 15 | Oct 1 – Dec 1Now |
| Pendleton | Mar 1 – Apr 15 | Aug 1 – Sept 1 |
| Portland | Jan 1 – Mar 1 | Oct 1 – Dec 31Now |
| Prineville | Apr 20 – June 15 | June 1 – Aug 1 |
| Redmond | May 1 – June 15 | June 1 – July 15 |
| Roseburg | Jan 15 – Mar 15 | Oct 1 – Dec 1Now |
| Salem | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Sandy | Feb 1 – Mar 20 | Oct 1 – Dec 1Now |
| Sherwood | Jan 15 – Mar 15 | Oct 1 – Dec 1Now |
| Silverton | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Springfield | Feb 15 – Apr 1 | Aug 20 – Sept 10 |
| St. Helens | Mar 1 – Apr 15 | Sept 15 – Nov 1Now |
| Sweet Home | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| The Dalles | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Tigard | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Troutdale | Feb 1 – Mar 20 | Oct 1 – Dec 1Now |
| Tualatin | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| West Linn | Jan 15 – Mar 15 | Oct 1 – Dec 1Now |
| Wilsonville | Jan 15 – Mar 15 | Sept 15 – Nov 1Now |
| Woodburn | Jan 15 – Mar 15 | Sept 15 – Nov 1Now |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for spinach.