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Iona, ID planting calendar

When to plant vegetables in Iona, ID (USDA hardiness zone 5b). Typical last spring frost around Jun 9, 2026 15 days year to year), first fall frost around Sep 11, 202612 days).

Playing it safe? Spring frost holds off until about Jun 28, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

Want exact dates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

Or get a printable Iona calendar and sowing reminders by email:

Still time to plant

As of today, these crops can still reach harvest before Iona, ID’s first frost (~Sep 11, 2026) — fastest first.

Month by month in Iona, ID

March

April

May

June

July

Understand your frost dates

More Idaho planting calendars

ZIP codes in Iona

83427

Frost dates are NOAA 1991–2020 climate normals for a representative location in Iona, ID (covering 1 ZIP); your exact dates depend on your address. Schedules are guidance, not guarantees.