When to plant scallion (green onion) in Washington
Washington spans USDA zones 6b–9a, so the right time to plant scallion (green onion) shifts by weeks across the state. The window to sow seed directly outdoors runs from about February 1 in Port Townsend to May 2 in Cheney — below are local dates for 132 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Seattle | 9a | March 8 | November 23 | February 8 – March 22 |
| Spokane | 7a | April 26 | October 15 | March 29 – May 10 |
| Tacoma | 8b | March 8 | November 14 | February 8 – March 22 |
| Vancouver | 8b | March 29 | November 9 | March 1 – April 12 |
| Bellevue | 9a | March 8 | November 23 | February 8 – March 22 |
| Kent | 8b | March 20 | November 10 | February 20 – April 3 |
| Everett | 8b | March 24 | November 2 | February 24 – April 7 |
| Spokane Valley | 7a | April 26 | October 15 | March 29 – May 10 |
Scallion (Green Onion) in Washington: FAQ
When can I plant scallion (green onion) in Washington?
Across Washington, the time to direct-sow scallion (green onion) spans roughly February 1 in Port Townsend to May 2 in Cheney, each following that city's local frost dates.
Does the scallion (green onion) planting date vary across Washington?
Yes. Washington publishes 132 cities with their own frost dates, so the right scallion (green onion) 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 scallion (green onion) take to grow in Washington?
Scallion (Green Onion) takes about 60–80 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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