Alabama planting zones & frost dates
The 7 Alabama cities on this site fall in zones 8a, 8b, 9a. Last spring frost dates range from Mar 3 in Mobile to Mar 31 in Huntsville.
| City | Zone | Last frost | First frost | Population |
|---|---|---|---|---|
| Huntsville | 8a | Mar 31 | Nov 2 | 230,402 |
| Mobile | 9a | Mar 3 | Nov 28 | 201,367 |
| Birmingham | 8a | Mar 30 | Nov 6 | 196,357 |
| Montgomery | 8b | Mar 13 | Nov 9 | 195,818 |
| Tuscaloosa | 8b | Mar 25 | Nov 5 | 114,288 |
| Hoover | 8b | Mar 29 | Nov 2 | 93,013 |
| Auburn | 8b | Mar 21 | Nov 10 | 83,757 |
Frost dates are 30%-risk dates from the nearest suitable NOAA station. Population: Census Vintage 2024 estimates.