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Planting calendar for ZIP 85638 (Tombstone, AZ)

When to plant vegetables in Tombstone, AZ (USDA hardiness zone 8b). Typical last spring frost around Mar 4, 2026 22 days year to year), first fall frost around Nov 29, 202614 days).

Playing it safe? Spring frost holds off until about Apr 1, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in Tombstone, AZ

January

February

March

April

September

October

December

Understand your frost dates

Frost dates for ZIP 85638: NOAA 1991-2020 normals (USC00028619 TOMBSTONE, AZ US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.