When to plant broccoli in South Dakota
South Dakota spans USDA zones 4a–5b, so the right time to plant broccoli shifts by weeks across the state. The window to transplant seedlings outdoors runs from about April 5 in Sioux Falls to April 21 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 5 – April 19 |
| Rapid City | 5b | May 3 | October 8 | April 12 – April 26 |
| Aberdeen | 4a | May 8 | September 29 | April 17 – May 1 |
| Brookings | 4b | May 6 | October 1 | April 15 – April 29 |
| Watertown | 4b | May 7 | September 30 | April 16 – April 30 |
| Mitchell | 5a | May 2 | October 6 | April 11 – April 25 |
| Yankton | 5a | April 27 | October 11 | April 6 – April 20 |
| Huron | 4b | May 6 | October 2 | April 15 – April 29 |
Broccoli in South Dakota: FAQ
When can I plant broccoli in South Dakota?
Across South Dakota, the time to transplant broccoli spans roughly April 5 in Sioux Falls to April 21 in Spearfish, each following that city's local frost dates.
Does the broccoli planting date vary across South Dakota?
Yes. South Dakota publishes 13 cities with their own frost dates, so the right broccoli 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 broccoli take to grow in South Dakota?
Broccoli takes about 55–80 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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