When to plant lavender in Idaho
Idaho spans USDA zones 5a–7a, so the right time to plant lavender shifts by weeks across the state. The window to transplant seedlings outdoors runs from about April 6 in Lewiston to May 17 in Garden City — below are local dates for 25 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Boise City | 7a | April 24 | October 21 | April 24 – May 8 |
| Meridian | 7a | April 24 | October 21 | April 24 – May 8 |
| Nampa | 7a | April 29 | October 13 | April 29 – May 13 |
| Idaho Falls | 5b | May 9 | October 1 | May 9 – May 23 |
| Caldwell | 7a | April 29 | October 13 | April 29 – May 13 |
| Pocatello | 6a | May 2 | October 11 | May 2 – May 16 |
| Coeur d'Alene | 6b | April 22 | October 18 | April 22 – May 6 |
| Twin Falls | 7a | April 30 | October 9 | April 30 – May 14 |
Lavender in Idaho: FAQ
When can I plant lavender in Idaho?
Across Idaho, the time to transplant lavender spans roughly April 6 in Lewiston to May 17 in Garden City, each following that city's local frost dates.
Does the lavender planting date vary across Idaho?
Yes. Idaho publishes 25 cities with their own frost dates, so the right lavender 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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