When to plant luffa in Washington
Washington spans USDA zones 6b–9a, so the right time to plant luffa shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 15 in Port Townsend to June 13 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 | March 22 – March 29 |
| Spokane | 7a | April 26 | October 15 | May 10 – May 17 |
| Tacoma | 8b | March 8 | November 14 | March 22 – March 29 |
| Vancouver | 8b | March 29 | November 9 | April 12 – April 19 |
| Bellevue | 9a | March 8 | November 23 | March 22 – March 29 |
| Kent | 8b | March 20 | November 10 | April 3 – April 10 |
| Everett | 8b | March 24 | November 2 | April 7 – April 14 |
| Spokane Valley | 7a | April 26 | October 15 | May 10 – May 17 |
Luffa in Washington: FAQ
When can I plant luffa in Washington?
Across Washington, the time to transplant luffa spans roughly March 15 in Port Townsend to June 13 in Cheney, each following that city's local frost dates.
Does the luffa planting date vary across Washington?
Yes. Washington publishes 132 cities with their own frost dates, so the right luffa 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 luffa take to grow in Washington?
Luffa takes about 150–200 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
Never miss a window in your area
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.