When to Plant Sweet Corn in Indiana
In Indiana, the time to sow sweet corn outside runs from Apr 5 – Apr 19 in Evansville to May 6 – May 20 in Crown Point. In Indianapolis city, it's Apr 27 – May 11. The average last spring frost differs by about 4 weeks across the state (Mar 29 in Evansville, Apr 29 in Crown Point), so use the dates for the town nearest you.
Sow corn in blocks rather than single rows so it pollinates well. Wait for soil around 60°F.
- Sow outside: 1–3 weeks after the last frost.
Sweet Corn planting dates in Indiana by city
| City | Zone | Sow outside |
|---|---|---|
| Anderson | 6a | Apr 26 – May 10 |
| Bloomington | 6b | Apr 22 – May 6 |
| Brownsburg | 6a | Apr 19 – May 3 |
| Carmel | 6a | Apr 28 – May 12 |
| Columbus | 6b | Apr 18 – May 2 |
| Crown Point | 5b | May 6 – May 20 |
| East Chicago | 6a | Apr 30 – May 14 |
| Elkhart | 6a | May 3 – May 17 |
| Evansville | 7a | Apr 5 – Apr 19 |
| Fishers | 6a | Apr 28 – May 12 |
| Fort Wayne | 6a | May 1 – May 15 |
| Franklin | 6b | Apr 27 – May 11 |
| Gary | 6a | Apr 29 – May 13 |
| Goshen | 6a | May 3 – May 17 |
| Greenfield | 6a | Apr 26 – May 10 |
| Greenwood | 6a | Apr 27 – May 11 |
| Hammond | 6a | Apr 30 – May 14 |
| Hobart | 6a | Apr 29 – May 13 |
| Indianapolis city | 6b | Apr 27 – May 11 |
| Jeffersonville | 7a | Apr 7 – Apr 21 |
| Kokomo | 6a | May 4 – May 18 |
| Lafayette | 6a | May 3 – May 17 |
| Lawrence | 6a | Apr 25 – May 9 |
| Marion | 6a | May 3 – May 17 |
| Merrillville | 6a | Apr 29 – May 13 |
| Michigan City | 6a | Apr 26 – May 10 |
| Mishawaka | 6a | Apr 30 – May 14 |
| Muncie | 6a | Apr 23 – May 7 |
| New Albany | 7a | Apr 7 – Apr 21 |
| Noblesville | 6a | Apr 28 – May 12 |
| Plainfield | 6a | Apr 19 – May 3 |
| Portage | 6a | Apr 29 – May 13 |
| Richmond | 6a | May 1 – May 15 |
| Schererville | 6a | Apr 30 – May 14 |
| South Bend | 6a | Apr 30 – May 14 |
| Terre Haute | 6a | Apr 22 – May 6 |
| Valparaiso | 6a | Apr 29 – May 13 |
| West Lafayette | 6a | May 3 – May 17 |
| Westfield | 6a | Apr 28 – May 12 |
| Zionsville | 6a | Apr 28 – May 12 |
Calculated from each town's average (50%) frost dates, from the nearest NOAA station (1991–2020). Typical dates for the 2027 planting season, based on NOAA's 1991–2020 averages. They are long-term odds, not a forecast: always check your local forecast before planting. Zones: 2023 USDA Plant Hardiness Zone Map (USDA-ARS and Oregon State University). Not the official map; see planthardiness.ars.usda.gov.
See all frost dates in Indiana, or the general guide to when to plant sweet corn.
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