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Planting calendar for ZIP 73659 (Putnam, OK)

When to plant vegetables in Putnam, OK (USDA hardiness zone 7a). Typical last spring frost around Apr 8, 2026 13 days year to year), first fall frost around Nov 1, 202611 days).

Playing it safe? Spring frost holds off until about Apr 24, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Putnam, OK planting calendar for dates typical of the whole city.

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Month by month in Putnam, OK

January

February

March

April

May

August

September

Understand your frost dates

Frost dates for ZIP 73659: NOAA 1991-2020 normals (USC00347343 PUTNAM 3N MESONET, OK US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.