When to plant in Deer Park, TX
USDA Zone 9bEverything below — frost dates, hardiness zone, and what to plant when in Deer Park, Texas — is derived from the closest NOAA station with complete climate normals.
With about 326 frost-free days, Deer Park supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. Heads up: the nearest complete-normals station is about 17 km from Deer Park, so your yard's frost dates can differ — a low spot or a paved city center can shift them by a week. In zone 9b, frost is a minor factor for Deer Park — most perennials thrive, and annual vegetables can go out early and stay late.
Frost probability
HOUSTON-PORT · 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 Deer Park’s own odds, recorded at HOUSTON-PORT.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 16 | Feb 24 | Jan 22 | Nov 12 | Dec 2 | Jan 1 |
| 32°F | Mar 5 | Feb 2 | Dec 31 | Nov 27 | Dec 25 | Jan 21 |
| 28°F | Feb 25 | Jan 23 | Dec 24 | Dec 8 | Jan 5 | Feb 9 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Deer Park, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 23 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.
Deer Park planting FAQ
When is the last spring frost in Deer Park, TX?
Plan for the last spring frost in Deer Park around February 2 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Deer Park, TX?
The first fall frost in Deer Park typically arrives around December 25 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Deer Park in?
Deer Park is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Deer Park?
Deer Park has about 326 frost-free days — a long growing season — between the average last spring frost (February 2) and first fall frost (December 25).
When should I plant tomatoes in Deer Park?
For Deer Park, sow tomatoes indoors about December 8–December 22 and move the seedlings out around February 9, after the last spring frost.
Never miss a window in Deer Park
An email when it’s time to start seeds, transplant, and sow — timed to Deer Park’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Pasadena · 5 km
- La Porte · 7 km
- Channelview · 11 km
- South Houston · 11 km
- Cloverleaf · 12 km
- Galena Park · 13 km
- Seabrook · 16 km
- Baytown · 17 km
Frost dates recorded at HOUSTON-PORT, 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 Deer Park, TX — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00414326. Retrieved from https://blissgarden.com/texas/deer-park.