When to plant horseradish in Hawaii
Hawaii spans USDA zone 12a, so the right time to plant horseradish shifts by weeks across the state. The window to transplant seedlings outdoors runs from about December 29 in Kapaa to December 29 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 29 – January 12 |
Horseradish in Hawaii: FAQ
When can I plant horseradish in Hawaii?
Across Hawaii, the time to transplant horseradish spans roughly December 29 in Kapaa to December 29 in Kapaa, each following that city's local frost dates.
Does the horseradish planting date vary across Hawaii?
Yes. Hawaii publishes 1 cities with their own frost dates, so the right horseradish 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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