When to plant tomatillo in South Dakota
South Dakota spans USDA zones 4a–5b, so the right time to plant tomatillo shifts by weeks across the state. The window to transplant seedlings outdoors runs from about May 3 in Sioux Falls to May 19 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 | May 3 – May 10 |
| Rapid City | 5b | May 3 | October 8 | May 10 – May 17 |
| Aberdeen | 4a | May 8 | September 29 | May 15 – May 22 |
| Brookings | 4b | May 6 | October 1 | May 13 – May 20 |
| Watertown | 4b | May 7 | September 30 | May 14 – May 21 |
| Mitchell | 5a | May 2 | October 6 | May 9 – May 16 |
| Yankton | 5a | April 27 | October 11 | May 4 – May 11 |
| Huron | 4b | May 6 | October 2 | May 13 – May 20 |
Tomatillo in South Dakota: FAQ
When can I plant tomatillo in South Dakota?
Across South Dakota, the time to transplant tomatillo spans roughly May 3 in Sioux Falls to May 19 in Spearfish, each following that city's local frost dates.
Does the tomatillo planting date vary across South Dakota?
Yes. South Dakota publishes 13 cities with their own frost dates, so the right tomatillo 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 tomatillo take to grow in South Dakota?
Tomatillo takes about 60–80 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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