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Planting calendar for ZIP 78374 (Portland, TX)

When to plant vegetables in Portland, TX (USDA hardiness zone 10a). Typical last spring frost around Jan 31, 2026 27 days year to year), first fall frost around Dec 22, 202625 days).

Playing it safe? Spring frost holds off until about Mar 6, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Portland, TX planting calendar for dates typical of the whole city.

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Month by month in Portland, TX

January

February

March

September

October

November

December

Understand your frost dates

Frost dates for ZIP 78374: NOAA 1991-2020 normals (USC00412011 CORPUS CHRISTI NWS, TX US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.