When to plant sweet potato in Alaska
Alaska spans USDA zones 2a–6a, so the right time to plant sweet potato shifts by weeks across the state. The window to transplant seedlings outdoors runs from about May 24 in Juneau city and to June 12 in Badger — below are local dates for 7 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Anchorage | 5a | May 16 | September 20 | June 6 – June 20 |
| Fairbanks | 2a | May 16 | September 6 | June 6 – June 20 |
| Juneau city and | 6a | May 3 | October 14 | May 24 – June 7 |
| Knik-Fairview | 5a | May 18 | September 20 | June 8 – June 22 |
| Badger | 2a | May 22 | September 2 | June 12 – June 26 |
| College | 2b | May 18 | September 6 | June 8 – June 22 |
| North Lakes | 5a | May 16 | September 23 | June 6 – June 20 |
Sweet Potato in Alaska: FAQ
When can I plant sweet potato in Alaska?
Across Alaska, the time to transplant sweet potato spans roughly May 24 in Juneau city and to June 12 in Badger, each following that city's local frost dates.
Does the sweet potato planting date vary across Alaska?
Yes. Alaska publishes 7 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 Alaska?
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.
Never miss a window in your area
An email when it’s time to start seeds, transplant, and sow — timed to your frost dates. Double opt-in, one-click unsubscribe, no spam.