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Planting calendar for ZIP 81040 (Gardner, CO)

When to plant vegetables in Gardner, CO (USDA hardiness zone 6a). Typical last spring frost around May 27, 2026 11 days year to year), first fall frost around Sep 25, 202611 days).

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

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

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Month by month in Gardner, CO

February

March

April

May

June

July

Understand your frost dates

Frost dates for ZIP 81040: NOAA 1991-2020 normals (USC00057572 SHEEP MTN, CO US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.