When to plant Collard greens in Washington
In spring, from Jan 15 – Mar 15 in Burien to May 10 – June 1 in Cheney.
In fall, from May 15 – June 15 in Cheney to Sept 1 – Dec 1 in Port Townsend.
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 |
|---|---|---|
| Aberdeen | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Airway Heights | Apr 1 – June 1 | July 1 – Aug 1 |
| Anacortes | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Arlington | Mar 10 – June 1 | July 15 – Aug 15 |
| Auburn | Feb 15 – May 1 | Aug 15 – Oct 1 |
| Bainbridge Island | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Battle Ground | Apr 1 – June 1 | July 15 – Aug 15 |
| Bellevue | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Bellingham | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Bonney Lake | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Bothell | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Bremerton | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Burien | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Burlington | Feb 15 – May 1 | Aug 1 – Sept 15 |
| Camas | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Centralia | Mar 10 – June 1 | Aug 1 – Sept 15 |
| Cheney | May 10 – June 1 | May 15 – June 15 |
| Covington | Mar 10 – June 1 | July 15 – Aug 15 |
| Des Moines | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| East Wenatchee | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Edgewood | Feb 1 – Apr 1 | Aug 15 – Oct 1 |
| Edmonds | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Ellensburg | Apr 15 – June 1 | June 15 – July 15 |
| Enumclaw | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Everett | Feb 15 – May 1 | Aug 1 – Sept 15 |
| Federal Way | Feb 1 – Apr 1 | Aug 15 – Oct 1 |
| Ferndale | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Fife | Feb 1 – Apr 1 | Aug 15 – Oct 1 |
| Gig Harbor | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Grandview | Apr 1 – June 1 | July 1 – Aug 1 |
| Issaquah | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Kelso | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Kenmore | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Kennewick | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Kent | Feb 15 – May 1 | Aug 15 – Oct 1 |
| Kirkland | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Lacey | Apr 1 – June 1 | July 1 – Aug 1 |
| Lake Forest Park | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Lake Stevens | Feb 15 – May 1 | Aug 1 – Sept 15 |
| Lakewood | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Liberty Lake | Apr 1 – June 1 | July 1 – Aug 1 |
| Longview | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Lynden | Mar 10 – June 1 | July 15 – Aug 15 |
| Lynnwood | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Maple Valley | Mar 10 – June 1 | July 15 – Aug 15 |
| Marysville | Feb 15 – May 1 | Aug 1 – Sept 15 |
| Mercer Island | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Mill Creek | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Monroe | Mar 10 – June 1 | July 15 – Aug 15 |
| Moses Lake | Apr 1 – June 1 | July 1 – Aug 1 |
| Mount Vernon | Feb 15 – May 1 | Aug 1 – Sept 15 |
| Mountlake Terrace | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Mukilteo | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Newcastle | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Oak Harbor | Feb 1 – Apr 1 | Aug 15 – Oct 1 |
| Olympia | Apr 1 – June 1 | July 1 – Aug 1 |
| Pasco | Apr 1 – June 1 | July 1 – Aug 1 |
| Port Angeles | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Port Orchard | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Port Townsend | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Poulsbo | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Pullman | Apr 15 – June 1 | June 15 – July 15 |
| Puyallup | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Redmond | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Renton | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Richland | Mar 1 – June 1 | July 15 – Aug 15 |
| Ridgefield | Apr 1 – June 1 | July 15 – Aug 15 |
| Sammamish | Mar 1 – June 1 | Aug 15 – Oct 1 |
| SeaTac | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Seattle | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Sedro-Woolley | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Shelton | Apr 1 – June 1 | July 15 – Aug 15 |
| Shoreline | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Snohomish | Feb 15 – May 1 | Aug 1 – Sept 15 |
| Snoqualmie | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Spokane | Apr 1 – June 1 | July 1 – Aug 1 |
| Spokane Valley | Apr 1 – June 1 | July 1 – Aug 1 |
| Sumner | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Sunnyside | Apr 1 – June 1 | July 1 – Aug 1 |
| Tacoma | Feb 1 – Apr 1 | Aug 15 – Oct 1 |
| Tukwila | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Tumwater | Apr 1 – June 1 | July 1 – Aug 1 |
| University Place | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Vancouver | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Walla Walla | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Washougal | Mar 1 – June 1 | Aug 25 – Nov 1Now |
| Wenatchee | Mar 1 – June 1 | Aug 1 – Sept 15 |
| West Richland | Mar 1 – June 1 | July 15 – Aug 15 |
| Woodinville | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Yakima | Mar 1 – June 1 | July 15 – Aug 15 |
| Yelm | Apr 1 – June 1 | July 1 – Aug 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.