When to plant sweet potato in Indiana
Indiana spans USDA zones 5b–7a, so the right time to plant sweet potato shifts by weeks across the state. The window to transplant seedlings outdoors runs from about April 19 in Evansville to May 23 in Auburn — below are local dates for 86 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Indianapolis | 6b | April 20 | October 21 | May 11 – May 25 |
| Fort Wayne | 6a | April 24 | October 21 | May 15 – May 29 |
| Evansville | 7a | March 29 | November 10 | April 19 – May 3 |
| South Bend | 6a | April 23 | October 23 | May 14 – May 28 |
| Fishers | 6a | April 21 | October 21 | May 12 – May 26 |
| Carmel | 6a | April 21 | October 21 | May 12 – May 26 |
| Bloomington | 6b | April 15 | October 26 | May 6 – May 20 |
| Hammond | 6a | April 23 | October 20 | May 14 – May 28 |
Sweet Potato in Indiana: FAQ
When can I plant sweet potato in Indiana?
Across Indiana, the time to transplant sweet potato spans roughly April 19 in Evansville to May 23 in Auburn, each following that city's local frost dates.
Does the sweet potato planting date vary across Indiana?
Yes. Indiana publishes 86 cities with their own frost dates, so the right sweet potato 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 sweet potato take to grow in Indiana?
Sweet Potato takes about 90–120 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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