When to plant broccoli in Idaho
Idaho spans USDA zones 5a–7a, so the right time to plant broccoli shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 16 in Lewiston to April 26 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 3 – April 17 |
| Meridian | 7a | April 24 | October 21 | April 3 – April 17 |
| Nampa | 7a | April 29 | October 13 | April 8 – April 22 |
| Idaho Falls | 5b | May 9 | October 1 | April 18 – May 2 |
| Caldwell | 7a | April 29 | October 13 | April 8 – April 22 |
| Pocatello | 6a | May 2 | October 11 | April 11 – April 25 |
| Coeur d'Alene | 6b | April 22 | October 18 | April 1 – April 15 |
| Twin Falls | 7a | April 30 | October 9 | April 9 – April 23 |
Broccoli in Idaho: FAQ
When can I plant broccoli in Idaho?
Across Idaho, the time to transplant broccoli spans roughly March 16 in Lewiston to April 26 in Garden City, each following that city's local frost dates.
Does the broccoli planting date vary across Idaho?
Yes. Idaho publishes 25 cities with their own frost dates, so the right broccoli planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does broccoli take to grow in Idaho?
Broccoli takes about 55–80 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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.