When to plant in Killeen, TX
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in Killeen, Texas — is derived from the closest NOAA station with complete climate normals.
Killeen enjoys a long ~248-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. Zone 8b means many perennials and even some tender shrubs overwinter in Killeen, while your frost dates still decide when annuals go out.
Frost probability
KILLEEN · 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 Killeen’s own odds, recorded at KILLEEN.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 19 | Mar 31 | Mar 7 | Oct 24 | Nov 7 | Nov 26 |
| 32°F | Apr 4 | Mar 14 | Feb 24 | Nov 1 | Nov 17 | Dec 6 |
| 28°F | Mar 22 | Mar 2 | Feb 5 | Nov 8 | Nov 30 | Dec 22 |
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 Killeen, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 38 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.
Killeen planting FAQ
When is the last spring frost in Killeen, TX?
On average, the last spring frost in Killeen is around March 14 (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 Killeen, TX?
Expect Killeen's first fall frost near November 17 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Killeen in?
Killeen is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Killeen?
There are roughly 248 frost-free days in Killeen (a long growing season), running from the average last frost around March 14 to the first fall frost near November 17.
When should I plant tomatoes in Killeen?
In Killeen, start tomato seeds indoors around January 17–January 31, then transplant seedlings outdoors around March 21 once the danger of frost has passed.
Never miss a window in Killeen
An email when it’s time to start seeds, transplant, and sow — timed to Killeen’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Harker Heights · 9 km
- Copperas Cove · 18 km
- Belton · 24 km
- Sonterra · 33 km
- Temple · 33 km
- Gatesville · 40 km
- Georgetown · 46 km
- Leander · 57 km
Frost dates recorded at KILLEEN, 4 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 Killeen, TX — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00414792. Retrieved from https://blissgarden.com/texas/killeen.