When to plant fennel (bulb) in Washington
Washington spans USDA zones 6b–9a, so the right time to plant fennel (bulb) shifts by weeks across the state. The window to transplant seedlings outdoors runs from about February 15 in Port Townsend to May 16 in Cheney — below are local dates for 132 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Seattle | 9a | March 8 | November 23 | February 22 – March 8 |
| Spokane | 7a | April 26 | October 15 | April 12 – April 26 |
| Tacoma | 8b | March 8 | November 14 | February 22 – March 8 |
| Vancouver | 8b | March 29 | November 9 | March 15 – March 29 |
| Bellevue | 9a | March 8 | November 23 | February 22 – March 8 |
| Kent | 8b | March 20 | November 10 | March 6 – March 20 |
| Everett | 8b | March 24 | November 2 | March 10 – March 24 |
| Spokane Valley | 7a | April 26 | October 15 | April 12 – April 26 |
Fennel (Bulb) in Washington: FAQ
When can I plant fennel (bulb) in Washington?
Across Washington, the time to transplant fennel (bulb) spans roughly February 15 in Port Townsend to May 16 in Cheney, each following that city's local frost dates.
Does the fennel (bulb) planting date vary across Washington?
Yes. Washington publishes 132 cities with their own frost dates, so the right fennel (bulb) planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does fennel (bulb) take to grow in Washington?
Fennel (Bulb) takes about 65–90 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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