When to plant hyssop in Louisiana
Louisiana spans USDA zones 8b–9b, so the right time to plant hyssop shifts by weeks across the state. The window to transplant seedlings outdoors runs from about January 22 in New Orleans to March 28 in Claiborne — below are local dates for 55 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| New Orleans | 9b | January 22 | January 5 | January 22 – February 5 |
| Baton Rouge | 9a | February 28 | November 26 | February 28 – March 14 |
| Shreveport | 8b | March 9 | November 18 | March 9 – March 23 |
| Metairie | 9b | January 30 | December 31 | January 30 – February 13 |
| Lafayette | 9a | February 26 | November 28 | February 26 – March 12 |
| Lake Charles | 9a | February 14 | December 7 | February 14 – February 28 |
| Kenner | 9b | January 30 | December 31 | January 30 – February 13 |
| Bossier City | 8b | February 28 | November 24 | February 28 – March 14 |
Hyssop in Louisiana: FAQ
When can I plant hyssop in Louisiana?
Across Louisiana, the time to transplant hyssop spans roughly January 22 in New Orleans to March 28 in Claiborne, each following that city's local frost dates.
Does the hyssop planting date vary across Louisiana?
Yes. Louisiana publishes 55 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.
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