When to plant in Spring, TX
USDA Zone 9bEverything below — frost dates, hardiness zone, and what to plant when in Spring, Texas — is derived from the closest NOAA station with complete climate normals.
With about 299 frost-free days, Spring supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. Zone 9b is warm enough that Spring can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average last spring frost in Spring is now 5 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
HOUSTON INTERCONT 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 Spring’s own odds, recorded at HOUSTON INTERCONT AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 25 | Mar 2 | Feb 5 | Nov 6 | Nov 25 | Dec 14 |
| 32°F | Mar 12 | Feb 13 | Jan 12 | Nov 17 | Dec 9 | Jan 11 |
| 28°F | Mar 2 | Jan 27 | Dec 26 | Dec 2 | Jan 2 | Feb 2 |
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 Spring, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 31 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.
Spring planting FAQ
When is the last spring frost in Spring, TX?
On average, the last spring frost in Spring is around February 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 Spring, TX?
Expect Spring's first fall frost near December 9 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Spring in?
Spring is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Spring?
There are roughly 299 frost-free days in Spring (a long growing season), running from the average last frost around February 13 to the first fall frost near December 9.
When should I plant tomatoes in Spring?
In Spring, start tomato seeds indoors around December 19–January 2, then transplant seedlings outdoors around February 20 once the danger of frost has passed.
Never miss a window in Spring
An email when it’s time to start seeds, transplant, and sow — timed to Spring’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Humble · 14 km
- Aldine · 17 km
- The Woodlands · 17 km
- Atascocita · 20 km
- Tomball · 23 km
- Houston · 31 km
- Conroe · 31 km
- Cloverleaf · 36 km
Frost dates recorded at HOUSTON INTERCONT AP, 9 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 Spring, TX — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00012960. Retrieved from https://blissgarden.com/texas/spring.