When to plant in Royse City, TX
USDA Zone 8bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Royse City, Texas — all computed from Royse City's nearest NOAA weather station.
With about 254 frost-free days, Royse City supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. These dates come from a station roughly 17 km away, the closest with full normals; terrain around Royse City (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 Royse City, while your frost dates still decide when annuals go out.
The average first fall frost in Royse City 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 Royse City’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 Royse City, 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.
Royse City planting FAQ
When is the last spring frost in Royse City, TX?
On average, the last spring frost in Royse City is around March 10 (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 Royse City, TX?
In Royse City, the first 32°F freeze of fall lands around November 19 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Royse City in?
Royse City is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Royse City?
There are roughly 254 frost-free days in Royse City (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 Royse City?
In Royse City, 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 Royse City
An email when it’s time to start seeds, transplant, and sow — timed to Royse City’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at LAVON DAM, 17 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 Royse City, TX — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00415094. Retrieved from https://blissgarden.com/texas/royse-city.