When to plant in Heartland, TX
USDA Zone 8bHeartland, Texas frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Heartland 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. These dates come from a station roughly 18 km away, the closest with full normals; terrain around Heartland (elevation, water, pavement) can move your real frost dates a few days either way. Zone 8b means many perennials and even some tender shrubs overwinter in Heartland, while your frost dates still decide when annuals go out.
Frost probability
TERRELL MUNI AP · 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 Heartland’s own odds, recorded at TERRELL MUNI AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 14 | Mar 24 | Mar 6 | Oct 23 | Nov 7 | Nov 23 |
| 32°F | Mar 29 | Mar 11 | Feb 21 | Nov 2 | Nov 18 | Dec 6 |
| 28°F | Mar 16 | Feb 28 | Jan 31 | Nov 12 | Nov 30 | Dec 23 |
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 Heartland, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 25 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.
Heartland planting FAQ
When is the last spring frost in Heartland, TX?
On average, the last spring frost in Heartland is around March 11 (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 Heartland, TX?
Expect Heartland's first fall frost near November 18 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Heartland in?
Heartland is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Heartland?
There are roughly 252 frost-free days in Heartland (a long growing season), running from the average last frost around March 11 to the first fall frost near November 18.
When should I plant tomatoes in Heartland?
In Heartland, start tomato seeds indoors around January 14–January 28, then transplant seedlings outdoors around March 18 once the danger of frost has passed.
Never miss a window in Heartland
An email when it’s time to start seeds, transplant, and sow — timed to Heartland’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Forney · 8 km
- Seagoville · 9 km
- Terrell · 15 km
- Mesquite · 16 km
- Balch Springs · 16 km
- Heath · 20 km
- Rockwall · 27 km
- Rowlett · 28 km
Frost dates recorded at TERRELL MUNI AP, 18 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 Heartland, TX — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00053911. Retrieved from https://blissgarden.com/texas/heartland.