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Planting calendar for ZIP 77640 (Port Arthur, TX)

When to plant vegetables in Port Arthur, TX (USDA hardiness zone 9b). Typical last spring frost around Feb 14, 2026 (±21 days year to year), first fall frost around Dec 7, 2026 (±21 days).

Playing it safe? Spring frost holds off until about Mar 12, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

Turn these dates into a plan: lay out your beds, place each crop on its sow and transplant dates, and get a reminder when it’s time. Free on one garden, no credit card.

Plan my garden for 77640

Month by month in Port Arthur, TX

January

February

March

September

November

December

Understand your frost dates

Where these dates come from

Frost dates for ZIP 77640 come from NOAA 1991-2020 normals (USW00012917 PORT ARTHUR SE TX AP, TX US). You can look up that station’s record yourself.

Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.