Indiana frost dates: I
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Idaville | Apr 22 | Oct 17 | 178 d | 6a |
| Indianapolis | Apr 20 | Oct 21 | 184 d | 6b |
| Ingalls | Apr 19 | Oct 23 | 187 d | 6a |
| Inglefield | Apr 4 | Oct 29 | 208 d | 7a |
| Ireland | Apr 6 | Oct 30 | 207 d | 6b |
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Idaville | Apr 22 | Oct 17 | 178 d | 6a |
| Indianapolis | Apr 20 | Oct 21 | 184 d | 6b |
| Ingalls | Apr 19 | Oct 23 | 187 d | 6a |
| Inglefield | Apr 4 | Oct 29 | 208 d | 7a |
| Ireland | Apr 6 | Oct 30 | 207 d | 6b |