When to plant Collard greens in Oregon
In spring, from Jan 1 – Mar 15 in Coos Bay to May 20 – June 1 in Redmond.
In fall, from May 15 – June 15 in Baker City to Sept 1 – Dec 1 in Portland.
Dates are for setting out plants. USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Albany | Mar 10 – June 1 | Aug 1 – Sept 15 |
| Ashland | Apr 15 – June 1 | July 1 – Aug 1 |
| Baker City | May 1 – June 1 | May 15 – June 15 |
| Beaverton | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Bend | May 20 – June 1 | May 15 – June 15 |
| Canby | Feb 15 – May 1 | Aug 15 – Oct 1 |
| Central Point | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Coos Bay | Jan 1 – Mar 15 | Sept 1 – Dec 31Now |
| Cornelius | Mar 10 – June 1 | Aug 1 – Sept 15 |
| Corvallis | Mar 10 – June 1 | Aug 1 – Sept 15 |
| Cottage Grove | Mar 10 – June 1 | July 15 – Aug 15 |
| Dallas | Mar 10 – June 1 | Aug 1 – Sept 15 |
| Eugene | Mar 1 – June 1 | July 15 – Aug 15 |
| Fairview | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Forest Grove | Mar 10 – June 1 | Aug 1 – Sept 15 |
| Gladstone | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Grants Pass | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Gresham | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Happy Valley | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Hermiston | Apr 1 – June 1 | July 1 – Aug 1 |
| Hillsboro | Mar 10 – June 1 | July 15 – Aug 15 |
| Independence | Mar 10 – June 1 | Aug 1 – Sept 15 |
| Keizer | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Klamath Falls | May 20 – June 1 | May 15 – June 15 |
| La Grande | Apr 15 – June 1 | June 15 – July 15 |
| Lake Oswego | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Lebanon | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Lincoln City | Mar 1 – June 1 | Aug 25 – Nov 1Now |
| McMinnville | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Medford | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Milwaukie | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Molalla | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Monmouth | Mar 10 – June 1 | Aug 1 – Sept 15 |
| Newberg | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Newport | Jan 1 – Mar 15 | Sept 1 – Dec 31Now |
| North Bend | Jan 1 – Mar 15 | Sept 1 – Dec 31Now |
| Ontario | Mar 10 – June 1 | July 1 – Aug 1 |
| Oregon City | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Pendleton | Mar 10 – June 1 | July 1 – Aug 1 |
| Portland | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Prineville | May 10 – June 1 | May 15 – June 15 |
| Redmond | May 20 – June 1 | May 15 – June 15 |
| Roseburg | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Salem | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Sandy | Mar 1 – June 1 | Aug 25 – Nov 1Now |
| Sherwood | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Silverton | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Springfield | Mar 1 – June 1 | July 15 – Aug 15 |
| St. Helens | Mar 10 – June 1 | Aug 15 – Oct 1 |
| Sweet Home | Mar 1 – June 1 | Aug 1 – Sept 15 |
| The Dalles | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Tigard | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Troutdale | Mar 1 – June 1 | Aug 25 – Nov 1Now |
| Tualatin | Mar 1 – June 1 | Aug 15 – Oct 1 |
| West Linn | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Wilsonville | Feb 15 – May 1 | Aug 15 – Oct 1 |
| Woodburn | Feb 15 – May 1 | Aug 15 – Oct 1 |
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 collards.