Skip to main content

Planting calendar for ZIP 63301 (Saint Charles, MO)

When to plant vegetables in Saint Charles, MO (USDA hardiness zone 6b). Typical last spring frost around Apr 8, 2026 13 days year to year), first fall frost around Oct 29, 202611 days).

Playing it safe? Spring frost holds off until about Apr 24, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Saint Charles, MO planting calendar for dates typical of the whole city.

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 ZIP 63301 calendar and sowing reminders by email:

Month by month in Saint Charles, MO

January

February

March

April

May

August

September

Understand your frost dates

Frost dates for ZIP 63301: NOAA 1991-2020 normals (USC00237397 ST CHARLES ELM PT, MO US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.