When to plant sweet corn in South Carolina
South Carolina spans USDA zones 8a–9b, so the right time to plant sweet corn 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 18 |
| Columbia | 8b | March 22 | November 15 | March 22 – April 5 |
| North Charleston | 9a | March 7 | November 27 | March 7 – March 21 |
| Mount Pleasant | 9a | March 13 | November 30 | March 13 – March 27 |
| Rock Hill | 8a | March 27 | November 5 | March 27 – April 10 |
| Greenville | 8a | March 28 | November 7 | March 28 – April 11 |
| Summerville | 8b | March 22 | November 12 | March 22 – April 5 |
| Goose Creek | 8b | March 7 | November 27 | March 7 – March 21 |
Sweet Corn in South Carolina: FAQ
When can I plant sweet corn in South Carolina?
Across South Carolina, the time to direct-sow sweet corn spans roughly February 4 in Charleston to April 20 in Gaffney, each following that city's local frost dates.
Does the sweet corn planting date vary across South Carolina?
Yes. South Carolina publishes 63 cities with their own frost dates, so the right sweet corn 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 sweet corn take to grow in South Carolina?
Sweet Corn takes about 60–90 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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