When to plant watercress in South Carolina
South Carolina spans USDA zones 8a–9b, so the right time to plant watercress shifts by weeks across the state. The window to sow seed directly outdoors runs from about January 21 in Charleston to April 6 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 21 – February 18 |
| Columbia | 8b | March 22 | November 15 | March 8 – April 5 |
| North Charleston | 9a | March 7 | November 27 | February 21 – March 21 |
| Mount Pleasant | 9a | March 13 | November 30 | February 27 – March 27 |
| Rock Hill | 8a | March 27 | November 5 | March 13 – April 10 |
| Greenville | 8a | March 28 | November 7 | March 14 – April 11 |
| Summerville | 8b | March 22 | November 12 | March 8 – April 5 |
| Goose Creek | 8b | March 7 | November 27 | February 21 – March 21 |
Watercress in South Carolina: FAQ
When can I plant watercress in South Carolina?
Across South Carolina, the time to direct-sow watercress spans roughly January 21 in Charleston to April 6 in Gaffney, each following that city's local frost dates.
Does the watercress planting date vary across South Carolina?
Yes. South Carolina publishes 63 cities with their own frost dates, so the right watercress 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 watercress take to grow in South Carolina?
Watercress takes about 45–60 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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