When to plant scallion (green onion) in Oklahoma
Oklahoma spans USDA zones 6b–8a, 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 15 in Ardmore to March 21 in Guymon — below are local dates for 45 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Oklahoma City | 7b | April 4 | November 2 | March 7 – April 18 |
| Tulsa | 7b | March 31 | November 4 | March 3 – April 14 |
| Norman | 7b | April 3 | November 3 | March 6 – April 17 |
| Broken Arrow | 7b | April 1 | November 1 | March 4 – April 15 |
| Edmond | 7b | April 10 | October 28 | March 13 – April 24 |
| Lawton | 7b | March 26 | November 7 | February 26 – April 9 |
| Moore | 7b | March 31 | November 5 | March 3 – April 14 |
| Midwest City | 7b | April 2 | November 5 | March 5 – April 16 |
Scallion (Green Onion) in Oklahoma: FAQ
When can I plant scallion (green onion) in Oklahoma?
Across Oklahoma, the time to direct-sow scallion (green onion) spans roughly February 15 in Ardmore to March 21 in Guymon, each following that city's local frost dates.
Does the scallion (green onion) planting date vary across Oklahoma?
Yes. Oklahoma publishes 45 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 Oklahoma?
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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