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Planting calendar for ZIP 81052 (Lamar, CO)

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.

See the full Lamar, CO planting calendar for dates typical of the whole city.

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Month by month in Lamar, CO

January

February

March

April

May

August

Understand your frost dates

Frost dates for ZIP 81052: NOAA 1991-2020 normals (USC00054770 LAMAR, CO US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.