When to plant sweet potato in Alabama
Alabama spans USDA zones 7b–9a, so the right time to plant sweet potato shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 14 in Mobile to April 27 in Jacksonville — below are local dates for 70 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Huntsville | 8a | March 24 | November 8 | April 14 – April 28 |
| Mobile | 9a | February 21 | December 6 | March 14 – March 28 |
| Birmingham | 8a | March 21 | November 11 | April 11 – April 25 |
| Montgomery | 8b | March 4 | November 18 | March 25 – April 8 |
| Tuscaloosa | 8b | March 18 | November 10 | April 8 – April 22 |
| Hoover | 8a | March 19 | November 8 | April 9 – April 23 |
| Auburn | 8b | March 13 | November 17 | April 3 – April 17 |
| Dothan | 9a | March 1 | November 24 | March 22 – April 5 |
Sweet Potato in Alabama: FAQ
When can I plant sweet potato in Alabama?
Across Alabama, the time to transplant sweet potato spans roughly March 14 in Mobile to April 27 in Jacksonville, each following that city's local frost dates.
Does the sweet potato planting date vary across Alabama?
Yes. Alabama publishes 70 cities with their own frost dates, so the right sweet potato planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does sweet potato take to grow in Alabama?
Sweet Potato takes about 90–120 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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