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Planting calendar for ZIP 85534 (Duncan, AZ)

When to plant vegetables in Duncan, AZ (USDA hardiness zone 8a). Typical last spring frost around Apr 24, 2026 12 days year to year), first fall frost around Oct 25, 202610 days).

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

See the full Duncan, AZ planting calendar for dates typical of the whole city.

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Month by month in Duncan, AZ

January

February

March

April

May

August

September

Understand your frost dates

Frost dates for ZIP 85534: NOAA 1991-2020 normals (USC00022754 DUNCAN, AZ US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.