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When to plant rhubarb in Washington

Washington spans USDA zones 6b–9a, so the right time to plant rhubarb shifts by weeks across the state. The window to transplant seedlings outdoors runs from about January 18 in Port Townsend to April 18 in Cheney — below are local dates for 132 cities, each computed from its own frost dates.

In Seattlethe rhubarb transplant out window (January 25–February 22) has passed for this year.
CityZoneLast frostFirst frostTransplant out
Seattle9aMarch 8November 23January 25 – February 22
Spokane7aApril 26October 15March 15 – April 12
Tacoma8bMarch 8November 14January 25 – February 22
Vancouver8bMarch 29November 9February 15 – March 15
Bellevue9aMarch 8November 23January 25 – February 22
Kent8bMarch 20November 10February 6 – March 6
Everett8bMarch 24November 2February 10 – March 10
Spokane Valley7aApril 26October 15March 15 – April 12

Rhubarb in Washington: FAQ

When can I plant rhubarb in Washington?

Across Washington, the time to transplant rhubarb spans roughly January 18 in Port Townsend to April 18 in Cheney, each following that city's local frost dates.

Does the rhubarb planting date vary across Washington?

Yes. Washington publishes 132 cities with their own frost dates, so the right rhubarb planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.

Planting reminders

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An email when it’s time to start seeds, transplant, and sow — timed to your frost dates. Double opt-in, one-click unsubscribe, no spam.

Rhubarb planting guide →All Washington cities →Washington planting calendar →
When to Plant Rhubarb in Washington — Frost-Based Dates by City — BlissGarden