When to plant Rhubarb in Washington
In spring, from Mar 1 – Apr 1 in Bonney Lake to May 1 – 20 in Cheney.
In fall, from Sept 1 – Oct 1 in Cheney to Nov 1 – Dec 1 in Wenatchee.
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 | Not listed | Not listed |
| Airway Heights | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
| Anacortes | Not listed | Not listed |
| Arlington | Mar 10 – Apr 10 | Oct 15 – Dec 1Now |
| Auburn | Not listed | Not listed |
| Bainbridge Island | Not listed | Not listed |
| Battle Ground | Mar 20 – Apr 15 | Oct 15 – Dec 1Now |
| Bellevue | Not listed | Not listed |
| Bellingham | Not listed | Nov 1 – Dec 1Soon |
| Bonney Lake | Mar 1 – Apr 1 | Nov 1 – Dec 1Soon |
| Bothell | Not listed | Not listed |
| Bremerton | Not listed | Not listed |
| Burien | Not listed | Not listed |
| Burlington | Not listed | Nov 1 – Dec 1Soon |
| Camas | Not listed | Not listed |
| Centralia | Mar 10 – Apr 10 | Nov 1 – Dec 1Soon |
| Cheney | May 1 – 20 | Sept 1 – Oct 1 |
| Covington | Mar 10 – Apr 10 | Oct 15 – Dec 1Now |
| Des Moines | Not listed | Not listed |
| East Wenatchee | Not listed | Nov 1 – Dec 1Soon |
| Edgewood | Not listed | Not listed |
| Edmonds | Not listed | Not listed |
| Ellensburg | Apr 1 – May 1 | Oct 1 – Nov 1Now |
| Enumclaw | Mar 1 – Apr 1 | Nov 1 – Dec 1Soon |
| Everett | Not listed | Nov 1 – Dec 1Soon |
| Federal Way | Not listed | Not listed |
| Ferndale | Not listed | Nov 1 – Dec 1Soon |
| Fife | Not listed | Not listed |
| Gig Harbor | Not listed | Not listed |
| Grandview | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
| Issaquah | Not listed | Not listed |
| Kelso | Mar 1 – Apr 1 | Not listed |
| Kenmore | Not listed | Not listed |
| Kennewick | Not listed | Nov 1 – Dec 1Soon |
| Kent | Not listed | Not listed |
| Kirkland | Not listed | Not listed |
| Lacey | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
| Lake Forest Park | Not listed | Not listed |
| Lake Stevens | Not listed | Nov 1 – Dec 1Soon |
| Lakewood | Not listed | Not listed |
| Liberty Lake | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
| Longview | Mar 1 – Apr 1 | Not listed |
| Lynden | Mar 10 – Apr 10 | Oct 15 – Dec 1Now |
| Lynnwood | Not listed | Not listed |
| Maple Valley | Mar 10 – Apr 10 | Oct 15 – Dec 1Now |
| Marysville | Not listed | Nov 1 – Dec 1Soon |
| Mercer Island | Not listed | Not listed |
| Mill Creek | Not listed | Not listed |
| Monroe | Mar 10 – Apr 10 | Oct 15 – Dec 1Now |
| Moses Lake | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
| Mount Vernon | Not listed | Nov 1 – Dec 1Soon |
| Mountlake Terrace | Not listed | Not listed |
| Mukilteo | Not listed | Not listed |
| Newcastle | Not listed | Not listed |
| Oak Harbor | Not listed | Not listed |
| Olympia | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
| Pasco | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
| Port Angeles | Not listed | Not listed |
| Port Orchard | Not listed | Not listed |
| Port Townsend | Not listed | Not listed |
| Poulsbo | Not listed | Not listed |
| Pullman | Apr 1 – May 1 | Oct 1 – Nov 1Now |
| Puyallup | Mar 1 – Apr 1 | Nov 1 – Dec 1Soon |
| Redmond | Not listed | Not listed |
| Renton | Not listed | Not listed |
| Richland | Mar 1 – Apr 1 | Oct 15 – Dec 1Now |
| Ridgefield | Mar 20 – Apr 15 | Oct 15 – Dec 1Now |
| Sammamish | Not listed | Not listed |
| SeaTac | Not listed | Not listed |
| Seattle | Not listed | Not listed |
| Sedro-Woolley | Not listed | Not listed |
| Shelton | Mar 20 – Apr 15 | Oct 15 – Dec 1Now |
| Shoreline | Not listed | Not listed |
| Snohomish | Not listed | Nov 1 – Dec 1Soon |
| Snoqualmie | Not listed | Not listed |
| Spokane | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
| Spokane Valley | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
| Sumner | Mar 1 – Apr 1 | Nov 1 – Dec 1Soon |
| Sunnyside | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
| Tacoma | Not listed | Not listed |
| Tukwila | Not listed | Not listed |
| Tumwater | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
| University Place | Not listed | Not listed |
| Vancouver | Not listed | Not listed |
| Walla Walla | Not listed | Nov 1 – Dec 1Soon |
| Washougal | Not listed | Not listed |
| Wenatchee | Not listed | Nov 1 – Dec 1Soon |
| West Richland | Mar 1 – Apr 1 | Oct 15 – Dec 1Now |
| Woodinville | Not listed | Not listed |
| Yakima | Mar 1 – Apr 1 | Oct 15 – Dec 1Now |
| Yelm | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
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 rhubarb.