Idaho: Vegetable Planting Calendar
Planting vegetable seeds or transplants at the correct time is important to getting the most out of your garden. Knowing your first and last frost dates will help you start your vegetable seeds at the right time.
Idaho is in USDA plant hardiness zones 3-7.
Learning Download: Growing in IdahoIdaho Last & First Frost Dates
| City | Last Frost Date | First Frost Date |
| Boise | 5/6 | 10/8 |
| Caldwell | 5/1 | 10/3 |
| Coeur d’Alene | 5/23 | 9/16 |
| Idaho Falls | 6/17 | 9/3 |
| Lewiston | 5/12 | 9/27 |
| Meridian | 4/22 | 10/10 |
| Nampa | 5/1 | 10/3 |
| Pocatella | 5/30 | 9/19 |
| Post Falls | 5/23 | 9/16 |
| Twin Falls | 5/18 | 9/23 |
*Based on statistics there is a 10% chance that frost will occur before or after these dates. Watch your local weather for more accurate dates.
Idaho on average has approximately 145 days between the last and first frost. Using the planting schedules below will help you get the most out of your garden.
Zone 3 Planting Schedule
Zone 4 Planting Schedule
Zone 5 Planting Schedule
Zone 6 Planting Schedule
Zone 7 Planting Schedule
