When to plant rhubarb in Hawaii
Hawaii spans USDA zone 12a, so the right time to plant rhubarb shifts by weeks across the state. The window to transplant seedlings outdoors runs from about December 15 in Kapaa to December 15 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 | December 15 – January 12 |
Rhubarb in Hawaii: FAQ
When can I plant rhubarb in Hawaii?
Across Hawaii, the time to transplant rhubarb spans roughly December 15 in Kapaa to December 15 in Kapaa, each following that city's local frost dates.
Does the rhubarb planting date vary across Hawaii?
Yes. Hawaii publishes 1 cities with their own frost dates, so the right rhubarb planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
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