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Lamar, CO planting calendar

When to plant vegetables in Lamar, CO (USDA hardiness zone 6a). Typical last spring frost around Apr 30, 2026 10 days year to year), first fall frost around Oct 10, 20268 days).

Playing it safe? Spring frost holds off until about May 12, 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 Lamar calendar and sowing reminders by email:

Still time to plant

As of today, these crops can still reach harvest before Lamar, CO’s first frost (~Oct 10, 2026) — fastest first.

Month by month in Lamar, CO

January

February

March

April

May

August

Understand your frost dates

More Colorado planting calendars

ZIP codes in Lamar

81052

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