Idaho · zones 5b–7b
When to plant cherry tomatoes in Idaho.
Sow or transplant between May 18 to Jul 18 in a typical year, keyed to Idaho's median last frost around May 11. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Cherry Tomatoes dates for a typical Idaho season.
1 · Start indoors
Apr 6 to Jun 6
About 6 weeks before set-out. Warm spot, real light.
2 · Set out
May 18 to Jul 18
Keyed to the ~May 11 last frost. Sow 0.25" deep, 24" apart.
Harvest
~57 days later
~8 lb per plant over ~10 weeks.
Idaho spans more than one climate: Zone 6 is the most common zone, but the state runs 5b to 7b. That's why the planner works from your ZIP code's frost dates, not your zone — mountain and coastal gardens in the same state can be three weeks apart.