When to plant scallion (green onion) in South Carolina
South Carolina spans USDA zones 8a–9b, 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 January 7 in Charleston to March 23 in Gaffney — below are local dates for 63 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Charleston | 9a | February 4 | December 30 | January 7 – February 18 |
| Columbia | 8b | March 22 | November 15 | February 22 – April 5 |
| North Charleston | 9a | March 7 | November 27 | February 7 – March 21 |
| Mount Pleasant | 9a | March 13 | November 30 | February 13 – March 27 |
| Rock Hill | 8a | March 27 | November 5 | February 27 – April 10 |
| Greenville | 8a | March 28 | November 7 | February 28 – April 11 |
| Summerville | 8b | March 22 | November 12 | February 22 – April 5 |
| Goose Creek | 8b | March 7 | November 27 | February 7 – March 21 |
Scallion (Green Onion) in South Carolina: FAQ
When can I plant scallion (green onion) in South Carolina?
Across South Carolina, the time to direct-sow scallion (green onion) spans roughly January 7 in Charleston to March 23 in Gaffney, each following that city's local frost dates.
Does the scallion (green onion) planting date vary across South Carolina?
Yes. South Carolina publishes 63 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 South Carolina?
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.
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.