When to plant in Rowlett, TX
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in Rowlett, Texas — is derived from the closest NOAA station with complete climate normals.
A generous ~254-day season lets Rowlett gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. Zone 8b means many perennials and even some tender shrubs overwinter in Rowlett, while your frost dates still decide when annuals go out.
The average first fall frost in Rowlett is now 5 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
LAVON DAM · 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 Rowlett’s own odds, recorded at LAVON DAM.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 16 | Mar 26 | Mar 4 | Oct 25 | Nov 8 | Nov 25 |
| 32°F | Mar 31 | Mar 10 | Feb 20 | Nov 1 | Nov 19 | Dec 5 |
| 28°F | Mar 17 | Feb 26 | Feb 1 | Nov 13 | 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 Rowlett, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 30 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.
Rowlett planting FAQ
When is the last spring frost in Rowlett, TX?
Rowlett's average last spring frost falls near March 10 — 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 Rowlett, TX?
The first fall frost in Rowlett typically arrives around November 19 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Rowlett in?
Rowlett is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Rowlett?
There are roughly 254 frost-free days in Rowlett (a long growing season), running from the average last frost around March 10 to the first fall frost near November 19.
When should I plant tomatoes in Rowlett?
In Rowlett, start tomato seeds indoors around January 13–January 27, then transplant seedlings outdoors around March 17 once the danger of frost has passed.
Never miss a window in Rowlett
An email when it’s time to start seeds, transplant, and sow — timed to Rowlett’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at LAVON DAM, 14 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 Rowlett, TX — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00415094. Retrieved from https://blissgarden.com/texas/rowlett.