When to plant in Jacksonville, TX
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in Jacksonville, Texas — is derived from the closest NOAA station with complete climate normals.
Zone 8b means many perennials and even some tender shrubs overwinter in Jacksonville, while your frost dates still decide when annuals go out.
The average last spring frost in Jacksonville is now 6 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
JACKSONVILLE · 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 Jacksonville’s own odds, recorded at JACKSONVILLE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 20 | Apr 4 | Mar 17 | Oct 21 | Nov 4 | Nov 22 |
| 32°F | Apr 8 | Mar 22 | Mar 1 | Oct 30 | Nov 14 | Dec 3 |
| 28°F | Mar 27 | Mar 8 | Feb 14 | Nov 5 | Nov 28 | Dec 18 |
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 Jacksonville, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 37 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.
Jacksonville planting FAQ
When is the last spring frost in Jacksonville, TX?
Jacksonville's average last spring frost falls near March 22 — 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 Jacksonville, TX?
Expect Jacksonville's first fall frost near November 14 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Jacksonville in?
Jacksonville is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Jacksonville?
There are roughly 237 frost-free days in Jacksonville (a long growing season), running from the average last frost around March 22 to the first fall frost near November 14.
When should I plant tomatoes in Jacksonville?
In Jacksonville, start tomato seeds indoors around January 25–February 8, then transplant seedlings outdoors around March 29 once the danger of frost has passed.
Never miss a window in Jacksonville
An email when it’s time to start seeds, transplant, and sow — timed to Jacksonville’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at JACKSONVILLE, 1 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 Jacksonville, TX — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00414525. Retrieved from https://blissgarden.com/texas/jacksonville.