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Mammoth, AZ planting calendar

When to plant vegetables in Mammoth, AZ (USDA hardiness zone 9a). Typical last spring frost around Feb 4, 2026 22 days year to year), first fall frost around Dec 8, 202615 days).

Playing it safe? Spring frost holds off until about Mar 4, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

Want exact dates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

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Still time to plant

As of today, these crops can still reach harvest before Mammoth, AZ’s first frost (~Dec 8, 2026) — fastest first.

Month by month in Mammoth, AZ

January

February

March

September

October

November

December

Understand your frost dates

More Arizona planting calendars

ZIP codes in Mammoth

85618

Frost dates are NOAA 1991–2020 climate normals for a representative location in Mammoth, AZ (covering 1 ZIP); your exact dates depend on your address. Schedules are guidance, not guarantees.