When to plant lima bean in Idaho
Idaho spans USDA zones 5a–7a, so the right time to plant lima bean shifts by weeks across the state. The window to sow seed directly outdoors runs from about April 13 in Lewiston to May 24 in Garden City — below are local dates for 25 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Boise City | 7a | April 24 | October 21 | May 1 – May 22 |
| Meridian | 7a | April 24 | October 21 | May 1 – May 22 |
| Nampa | 7a | April 29 | October 13 | May 6 – May 27 |
| Idaho Falls | 5b | May 9 | October 1 | May 16 – June 6 |
| Caldwell | 7a | April 29 | October 13 | May 6 – May 27 |
| Pocatello | 6a | May 2 | October 11 | May 9 – May 30 |
| Coeur d'Alene | 6b | April 22 | October 18 | April 29 – May 20 |
| Twin Falls | 7a | April 30 | October 9 | May 7 – May 28 |
Lima Bean in Idaho: FAQ
When can I plant lima bean in Idaho?
Across Idaho, the time to direct-sow lima bean spans roughly April 13 in Lewiston to May 24 in Garden City, each following that city's local frost dates.
Does the lima bean planting date vary across Idaho?
Yes. Idaho publishes 25 cities with their own frost dates, so the right lima bean 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 lima bean take to grow in Idaho?
Lima Bean takes about 65–90 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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