When to plant in Denton, TX
USDA Zone 8aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Denton, Texas — all computed from Denton's nearest NOAA weather station.
Denton enjoys a long ~252-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. In zone 8a, Denton 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 Denton is now 6 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
DENTON 2 SE · 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 Denton’s own odds, recorded at DENTON 2 SE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 16 | Mar 28 | Mar 8 | Oct 26 | Nov 10 | Nov 26 |
| 32°F | Mar 31 | Mar 13 | Feb 24 | Nov 3 | Nov 20 | Dec 8 |
| 28°F | Mar 18 | Mar 1 | Feb 6 | Nov 11 | Dec 1 | 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 Denton, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 20 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.
Denton planting FAQ
When is the last spring frost in Denton, TX?
On average, the last spring frost in Denton is around March 13 (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 Denton, TX?
Expect Denton's first fall frost near November 20 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Denton in?
Denton is in USDA hardiness zone 8a. In zone 8a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Denton?
Denton has about 252 frost-free days — a long growing season — between the average last spring frost (March 13) and first fall frost (November 20).
When should I plant tomatoes in Denton?
For Denton, sow tomatoes indoors about January 16–January 30 and move the seedlings out around March 20, after the last spring frost.
Never miss a window in Denton
An email when it’s time to start seeds, transplant, and sow — timed to Denton’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Corinth · 10 km
- Lantana · 14 km
- Highland Village · 16 km
- Flower Mound · 20 km
- Little Elm · 21 km
- Roanoke · 24 km
- Lewisville · 24 km
- Trophy Club · 25 km
Frost dates recorded at DENTON 2 SE, 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 Denton, TX — Frost Dates & Zone 8a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00412404. Retrieved from https://blissgarden.com/texas/denton.