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Planting calendar for ZIP 78258 (San Antonio, TX)

When to plant vegetables in San Antonio, TX (USDA hardiness zone 9a). Typical last spring frost around Feb 26, 2026 (±18 days year to year), first fall frost around Nov 28, 2026 (±18 days).

Playing it safe? Spring frost holds off until about Mar 21, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full San Antonio, 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 78258

Month by month in San Antonio, TX

January

February

March

April

September

November

December

Understand your frost dates

Where these dates come from

Frost dates for ZIP 78258 come from NOAA 1991-2020 normals (USW00012921 SAN ANTONIO INTL 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.