When to plant napa cabbage in South Dakota
South Dakota spans USDA zones 4a–5b, so the right time to plant napa cabbage shifts by weeks across the state. The window to transplant seedlings outdoors runs from about April 12 in Sioux Falls to April 28 in Spearfish — below are local dates for 13 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Sioux Falls | 5a | April 26 | October 13 | April 12 – April 26 |
| Rapid City | 5b | May 3 | October 8 | April 19 – May 3 |
| Aberdeen | 4a | May 8 | September 29 | April 24 – May 8 |
| Brookings | 4b | May 6 | October 1 | April 22 – May 6 |
| Watertown | 4b | May 7 | September 30 | April 23 – May 7 |
| Mitchell | 5a | May 2 | October 6 | April 18 – May 2 |
| Yankton | 5a | April 27 | October 11 | April 13 – April 27 |
| Huron | 4b | May 6 | October 2 | April 22 – May 6 |
Napa Cabbage in South Dakota: FAQ
When can I plant napa cabbage in South Dakota?
Across South Dakota, the time to transplant napa cabbage spans roughly April 12 in Sioux Falls to April 28 in Spearfish, each following that city's local frost dates.
Does the napa cabbage planting date vary across South Dakota?
Yes. South Dakota publishes 13 cities with their own frost dates, so the right napa cabbage 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 napa cabbage take to grow in South Dakota?
Napa Cabbage takes about 70–85 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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