When to plant Cauliflower in Washington
In spring, from Jan 20 – Feb 20 in Burien to May 20 – June 1 in Cheney.
In fall, from May 1 – June 1 in Cheney to Aug 15 – Oct 10 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 | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| Airway Heights | Apr 10 – May 10 | June 1 – July 25 |
| Anacortes | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Arlington | Mar 15 – Apr 20 | July 1 – Aug 5 |
| Auburn | Feb 10 – Mar 10 | Aug 1 – Sept 1 |
| Bainbridge Island | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| Battle Ground | Apr 10 – May 10 | July 1 – Aug 5 |
| Bellevue | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Bellingham | Feb 20 – Mar 20 | July 15 – Aug 15 |
| Bonney Lake | Mar 1 – 20 | July 15 – Aug 15 |
| Bothell | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Bremerton | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| Burien | Jan 20 – Feb 20 | Aug 1 – Sept 15 |
| Burlington | Feb 10 – Mar 10 | July 15 – Aug 15 |
| Camas | Feb 10 – Mar 10 | Aug 1 – Sept 15 |
| Centralia | Mar 15 – Apr 20 | July 15 – Aug 15 |
| Cheney | May 20 – June 1 | May 1 – June 1 |
| Covington | Mar 15 – Apr 20 | July 1 – Aug 5 |
| Des Moines | Jan 20 – Feb 20 | Aug 1 – Sept 15 |
| East Wenatchee | Feb 20 – Mar 20 | July 15 – Aug 15 |
| Edgewood | Feb 1 – Mar 1 | Aug 1 – Sept 1 |
| Edmonds | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Ellensburg | Apr 15 – May 15 | May 10 – July 15 |
| Enumclaw | Mar 1 – 20 | July 15 – Aug 15 |
| Everett | Feb 10 – Mar 10 | July 15 – Aug 15 |
| Federal Way | Feb 1 – Mar 1 | Aug 1 – Sept 1 |
| Ferndale | Feb 20 – Mar 20 | July 15 – Aug 15 |
| Fife | Feb 1 – Mar 1 | Aug 1 – Sept 1 |
| Gig Harbor | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Grandview | Apr 10 – May 10 | June 1 – July 25 |
| Issaquah | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Kelso | Mar 1 – 20 | Aug 1 – Sept 1 |
| Kenmore | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Kennewick | Feb 20 – Mar 20 | July 15 – Aug 15 |
| Kent | Feb 10 – Mar 10 | Aug 1 – Sept 1 |
| Kirkland | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Lacey | Apr 10 – May 10 | June 1 – July 25 |
| Lake Forest Park | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Lake Stevens | Feb 10 – Mar 10 | July 15 – Aug 15 |
| Lakewood | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Liberty Lake | Apr 10 – May 10 | June 1 – July 25 |
| Longview | Mar 1 – 20 | Aug 1 – Sept 1 |
| Lynden | Mar 15 – Apr 20 | July 1 – Aug 5 |
| Lynnwood | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Maple Valley | Mar 15 – Apr 20 | July 1 – Aug 5 |
| Marysville | Feb 10 – Mar 10 | July 15 – Aug 15 |
| Mercer Island | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Mill Creek | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Monroe | Mar 15 – Apr 20 | July 1 – Aug 5 |
| Moses Lake | Apr 10 – May 10 | June 1 – July 25 |
| Mount Vernon | Feb 10 – Mar 10 | July 15 – Aug 15 |
| Mountlake Terrace | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Mukilteo | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Newcastle | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Oak Harbor | Feb 1 – Mar 1 | Aug 1 – Sept 1 |
| Olympia | Apr 10 – May 10 | June 1 – July 25 |
| Pasco | Apr 10 – May 10 | June 1 – July 25 |
| Port Angeles | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Port Orchard | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| Port Townsend | Jan 20 – Feb 20 | Aug 15 – Oct 10 |
| Poulsbo | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| Pullman | Apr 15 – May 15 | May 10 – July 15 |
| Puyallup | Mar 1 – 20 | July 15 – Aug 15 |
| Redmond | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Renton | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Richland | Mar 1 – 20 | July 1 – Aug 5 |
| Ridgefield | Apr 10 – May 10 | July 1 – Aug 5 |
| Sammamish | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| SeaTac | Jan 20 – Feb 20 | Aug 1 – Sept 15 |
| Seattle | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Sedro-Woolley | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| Shelton | Apr 10 – May 10 | July 1 – Aug 5 |
| Shoreline | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Snohomish | Feb 10 – Mar 10 | July 15 – Aug 15 |
| Snoqualmie | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| Spokane | Apr 10 – May 10 | June 1 – July 25 |
| Spokane Valley | Apr 10 – May 10 | June 1 – July 25 |
| Sumner | Mar 1 – 20 | July 15 – Aug 15 |
| Sunnyside | Apr 10 – May 10 | June 1 – July 25 |
| Tacoma | Feb 1 – Mar 1 | Aug 1 – Sept 1 |
| Tukwila | Jan 20 – Feb 20 | Aug 1 – Sept 15 |
| Tumwater | Apr 10 – May 10 | June 1 – July 25 |
| University Place | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Vancouver | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| Walla Walla | Feb 20 – Mar 20 | July 15 – Aug 15 |
| Washougal | Feb 20 – Mar 20 | Aug 1 – Sept 15 |
| Wenatchee | Feb 20 – Mar 20 | July 15 – Aug 15 |
| West Richland | Mar 1 – 20 | July 1 – Aug 5 |
| Woodinville | Feb 1 – Mar 1 | Aug 1 – Sept 15 |
| Yakima | Mar 1 – 20 | July 1 – Aug 5 |
| Yelm | Apr 10 – May 10 | June 1 – July 25 |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. The full USDA table for cauliflower.