When to plant dill in South Dakota
South Dakota spans USDA zones 4a–5b, so the right time to plant dill shifts by weeks across the state. The window to sow seed directly 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 | Direct sow |
|---|---|---|---|---|
| Sioux Falls | 5a | April 26 | October 13 | April 12 – May 24 |
| Rapid City | 5b | May 3 | October 8 | April 19 – May 31 |
| Aberdeen | 4a | May 8 | September 29 | April 24 – June 5 |
| Brookings | 4b | May 6 | October 1 | April 22 – June 3 |
| Watertown | 4b | May 7 | September 30 | April 23 – June 4 |
| Mitchell | 5a | May 2 | October 6 | April 18 – May 30 |
| Yankton | 5a | April 27 | October 11 | April 13 – May 25 |
| Huron | 4b | May 6 | October 2 | April 22 – June 3 |
Dill in South Dakota: FAQ
When can I plant dill in South Dakota?
Across South Dakota, the time to direct-sow dill spans roughly April 12 in Sioux Falls to April 28 in Spearfish, each following that city's local frost dates.
Does the dill planting date vary across South Dakota?
Yes. South Dakota publishes 13 cities with their own frost dates, so the right dill 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 dill take to grow in South Dakota?
Dill takes about 40–60 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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