When to plant sunflower in South Carolina
South Carolina spans USDA zones 8a–9b, so the right time to plant sunflower shifts by weeks across the state. The window to sow seed directly outdoors runs from about February 4 in Charleston to April 20 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 | February 4 – February 25 |
| Columbia | 8b | March 22 | November 15 | March 22 – April 12 |
| North Charleston | 9a | March 7 | November 27 | March 7 – March 28 |
| Mount Pleasant | 9a | March 13 | November 30 | March 13 – April 3 |
| Rock Hill | 8a | March 27 | November 5 | March 27 – April 17 |
| Greenville | 8a | March 28 | November 7 | March 28 – April 18 |
| Summerville | 8b | March 22 | November 12 | March 22 – April 12 |
| Goose Creek | 8b | March 7 | November 27 | March 7 – March 28 |
Sunflower in South Carolina: FAQ
When can I plant sunflower in South Carolina?
Across South Carolina, the time to direct-sow sunflower spans roughly February 4 in Charleston to April 20 in Gaffney, each following that city's local frost dates.
Does the sunflower planting date vary across South Carolina?
Yes. South Carolina publishes 63 cities with their own frost dates, so the right sunflower 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 sunflower take to grow in South Carolina?
Sunflower takes about 70–100 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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