Georgia frost dates: O
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Oakfield | Mar 9 | Nov 20 | 256 d | 9a |
| Oakman | Apr 2 | Nov 1 | 213 d | 8a |
| Oakwood | Mar 20 | Nov 14 | 239 d | 8a |
| Ochlocknee | Mar 11 | Nov 21 | 255 d | 9a |
| Ocilla | Mar 2 | Nov 25 | 268 d | 9a |
| Oconee | Mar 19 | Nov 13 | 239 d | 8b |
| Odum | Mar 17 | Nov 16 | 244 d | 9a |
| Offerman | Mar 25 | Nov 15 | 235 d | 9a |
| Oglethorpe | Mar 20 | Nov 14 | 239 d | 8b |
| Oliver | Mar 7 | Nov 21 | 259 d | 9a |
| Omaha | Mar 21 | Nov 11 | 235 d | 8b |
| Omega | Mar 11 | Nov 19 | 253 d | 9a |
| Orchard Hill | Mar 20 | Nov 13 | 238 d | 8b |
| Oxford | Mar 22 | Nov 14 | 237 d | 8b |