When to plant Watermelon and cantaloupe in Idaho
In spring, from Apr 20 – June 1 in Lewiston to June 15 – July 1 in Garden City.
For a fall crop, from May 1 – June 15 in Rexburg to July 1 – 15 in Lewiston.
Cantaloupe (muskmelon) dates are the same as watermelon except where the table notes them.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Ammon | June 1 – 15 | May 15 – June 1 |
| Blackfoot | May 15 – June 15 | May 15 – June 1 |
| Boise City | May 1 – June 15 | June 15 – July 20 |
| Burley | June 1 – 15 | May 15 – June 1 |
| Caldwell | May 15 – June 15 | June 1 – 15 |
| Chubbuck | June 15 – July 1Cantaloupe (muskmelon): not listed | May 15 – June 1 |
| Coeur d'Alene | May 1 – June 15 | June 15 – July 20 |
| Eagle | May 15 – June 15 | June 15 – July 20 |
| Garden City | June 15 – July 1Cantaloupe (muskmelon): not listed | June 1 – 15 |
| Hayden | May 1 – June 15 | June 15 – July 20 |
| Idaho Falls | June 1 – 15 | May 15 – June 1 |
| Jerome | May 15 – June 15 | June 1 – 15 |
| Kuna | May 1 – June 15 | June 15 – July 20 |
| Lewiston | Apr 20 – June 1 | July 1 – 15 |
| Meridian | May 1 – June 15 | June 15 – July 20 |
| Middleton | May 15 – June 15 | June 1 – 15 |
| Moscow | May 15 – June 15 | May 15 – June 1 |
| Mountain Home | May 15 – June 15 | June 1 – 15 |
| Nampa | May 15 – June 15 | June 1 – 15 |
| Pocatello | May 15 – June 15 | June 1 – 15 |
| Post Falls | May 1 – June 15 | June 15 – July 20 |
| Rathdrum | May 1 – June 15 | June 15 – July 20 |
| Rexburg | June 1 – 15 | May 1 – June 15 |
| Sandpoint | June 1 – 15 | May 15 – June 1 |
| Star | May 15 – June 15 | June 1 – 15 |
| Twin Falls | May 15 – June 15 | June 1 – 15 |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. The full USDA table for watermelon.
Updated