When to plant in Boerne, TX
USDA Zone 8bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Boerne, Texas — all computed from Boerne's nearest NOAA weather station.
A generous ~243-day season lets Boerne gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. In zone 8b, Boerne supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
The average last spring frost in Boerne is now 5 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
BOERNE · 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 Boerne’s own odds, recorded at BOERNE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 22 | Apr 1 | Mar 9 | Oct 21 | Nov 4 | Nov 21 |
| 32°F | Apr 8 | Mar 15 | Feb 23 | Oct 31 | Nov 13 | Dec 4 |
| 28°F | Mar 23 | Mar 2 | Jan 31 | Nov 5 | Nov 27 | Dec 21 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Boerne, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 37 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.
Boerne planting FAQ
When is the last spring frost in Boerne, TX?
Boerne's average last spring frost falls near March 15 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Boerne, TX?
In Boerne, the first 32°F freeze of fall lands around November 13 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Boerne in?
Boerne is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Boerne?
Boerne has about 243 frost-free days — a long growing season — between the average last spring frost (March 15) and first fall frost (November 13).
When should I plant tomatoes in Boerne?
For Boerne, sow tomatoes indoors about January 18–February 1 and move the seedlings out around March 22, after the last spring frost.
Never miss a window in Boerne
An email when it’s time to start seeds, transplant, and sow — timed to Boerne’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Fair Oaks Ranch · 10 km
- Scenic Oaks · 11 km
- Timberwood Park · 25 km
- Leon Valley · 34 km
- San Antonio · 41 km
- Live Oak · 45 km
- Selma · 46 km
- Canyon Lake · 46 km
Frost dates recorded at BOERNE, 2 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 Boerne, TX — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00410902. Retrieved from https://blissgarden.com/texas/boerne.