When to plant in Universal City, TX
USDA Zone 9aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Universal City, Texas — all computed from Universal City's nearest NOAA weather station.
With about 287 frost-free days, Universal City supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. Zone 9a is warm enough that Universal City can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
RANDOLPH AFB · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Universal City’s own odds, recorded at RANDOLPH AFB.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 26 | Mar 6 | Feb 13 | Nov 4 | Nov 24 | Dec 10 |
| 32°F | Mar 14 | Feb 21 | Jan 10 | Nov 16 | Dec 5 | Jan 1 |
| 28°F | Mar 5 | Jan 26 | Dec 18 | Nov 28 | Dec 19 | Feb 1 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Universal City, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 18 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Universal City planting FAQ
When is the last spring frost in Universal City, TX?
On average, the last spring frost in Universal City is around February 21 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Universal City, TX?
In Universal City, the first 32°F freeze of fall lands around December 5 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Universal City in?
Universal City is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Universal City?
There are roughly 287 frost-free days in Universal City (a long growing season), running from the average last frost around February 21 to the first fall frost near December 5.
When should I plant tomatoes in Universal City?
In Universal City, start tomato seeds indoors around December 27–January 10, then transplant seedlings outdoors around February 28 once the danger of frost has passed.
Never miss a window in Universal City
An email when it’s time to start seeds, transplant, and sow — timed to Universal City’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Live Oak · 3 km
- Selma · 4 km
- Converse · 4 km
- Schertz · 6 km
- Cibolo · 9 km
- San Antonio · 23 km
- Timberwood Park · 24 km
- New Braunfels · 25 km
Frost dates recorded at RANDOLPH AFB, 3 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Universal City, TX — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00012911. Retrieved from https://blissgarden.com/texas/universal-city.