When to plant in Tracy, CA
USDA Zone 9bEverything below — frost dates, hardiness zone, and what to plant when in Tracy, California — is derived from the closest NOAA station with complete climate normals.
A generous ~274-day season lets Tracy gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. Zone 9b is warm enough that Tracy can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
TRACY CARBONA · 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 Tracy’s own odds, recorded at TRACY CARBONA.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 23 | Apr 3 | Feb 28 | Oct 26 | Nov 12 | Nov 26 |
| 32°F | Apr 6 | Feb 25 | Jan 24 | Nov 8 | Nov 26 | Dec 12 |
| 28°F | Feb 21 | Jan 18 | Dec 26 | Nov 25 | Dec 11 | Jan 4 |
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 Tracy, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 27 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.
Tracy planting FAQ
When is the last spring frost in Tracy, CA?
Plan for the last spring frost in Tracy around February 25 (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 Tracy, CA?
In Tracy, the first 32°F freeze of fall lands around November 26 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Tracy in?
Tracy is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Tracy?
There are roughly 274 frost-free days in Tracy (a long growing season), running from the average last frost around February 25 to the first fall frost near November 26.
When should I plant tomatoes in Tracy?
In Tracy, start tomato seeds indoors around December 31–January 14, then transplant seedlings outdoors around March 4 once the danger of frost has passed.
Never miss a window in Tracy
An email when it’s time to start seeds, transplant, and sow — timed to Tracy’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Mountain House · 9 km
- Lathrop · 15 km
- Manteca · 21 km
- Discovery Bay · 24 km
- Livermore · 27 km
- Ripon · 28 km
- Country Club · 28 km
- Stockton · 30 km
Frost dates recorded at TRACY CARBONA, 11 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 Tracy, CA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00048999. Retrieved from https://blissgarden.com/california/tracy.