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Planting calendar for ZIP 66520 (Olsburg, KS)

When to plant vegetables in Olsburg, KS (USDA hardiness zone 6a). Typical last spring frost around Apr 22, 2026 11 days year to year), first fall frost around Oct 20, 202611 days).

Playing it safe? Spring frost holds off until about May 6, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Olsburg, KS planting calendar for dates typical of the whole city.

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Month by month in Olsburg, KS

January

February

March

April

May

August

Understand your frost dates

Frost dates for ZIP 66520: NOAA 1991-2020 normals (USC00148259 TUTTLE CREEK LAKE, KS US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.