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Planting calendar for ZIP 78664 (Round Rock, TX)

When to plant vegetables in Round Rock, TX (USDA hardiness zone 9a). Typical last spring frost around Mar 11, 2026 14 days year to year), first fall frost around Nov 20, 202614 days).

Playing it safe? Spring frost holds off until about Mar 28, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in Round Rock, TX

January

February

March

April

September

December

Understand your frost dates

Frost dates for ZIP 78664: NOAA 1991-2020 normals (USC00410433 AUSTIN GREAT HILLS, TX US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.