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Fort Supply, OK planting calendar

When to plant vegetables in Fort Supply, OK (USDA hardiness zone 7a). Typical last spring frost around Apr 21, 2026 11 days year to year), first fall frost around Oct 19, 202611 days).

Playing it safe? Spring frost holds off until about May 5, 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:

Or get a printable Fort Supply calendar and sowing reminders by email:

Still time to plant

As of today, these crops can still reach harvest before Fort Supply, OK’s first frost (~Oct 19, 2026) — fastest first.

Month by month in Fort Supply, OK

January

February

March

April

May

August

Understand your frost dates

More Oklahoma planting calendars

ZIP codes in Fort Supply

73841

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