When to plant hyssop in Hawaii
Hawaii spans USDA zone 12a, so the right time to plant hyssop shifts by weeks across the state. The window to transplant seedlings outdoors runs from about January 26 in Kapaa to January 26 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 | January 26 – February 9 |
Hyssop in Hawaii: FAQ
When can I plant hyssop in Hawaii?
Across Hawaii, the time to transplant hyssop spans roughly January 26 in Kapaa to January 26 in Kapaa, each following that city's local frost dates.
Does the hyssop planting date vary across Hawaii?
Yes. Hawaii publishes 1 cities with their own frost dates, so the right hyssop planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
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.