When to plant sweet potato in Hawaii
Hawaii spans USDA zone 12a, so the right time to plant sweet potato shifts by weeks across the state. The window to transplant seedlings outdoors runs from about February 16 in Kapaa to February 16 in Kapaa — below are local dates for 1 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Kapaa | 12a | January 26 | January 24 | February 16 – March 2 |
Sweet Potato in Hawaii: FAQ
When can I plant sweet potato in Hawaii?
Across Hawaii, the time to transplant sweet potato spans roughly February 16 in Kapaa to February 16 in Kapaa, each following that city's local frost dates.
Does the sweet potato planting date vary across Hawaii?
Yes. Hawaii publishes 1 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 Hawaii?
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.