Tennessee frost dates: I
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Idlewild | Apr 4 | Oct 28 | 207 d | 7b |
| Indian Mound | Apr 4 | Oct 31 | 210 d | 7b |
| Iron City | Mar 29 | Nov 4 | 220 d | 7b |
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Idlewild | Apr 4 | Oct 28 | 207 d | 7b |
| Indian Mound | Apr 4 | Oct 31 | 210 d | 7b |
| Iron City | Mar 29 | Nov 4 | 220 d | 7b |