When to plant in La Cañada Flintridge, CA
USDA Zone 10aLa Cañada Flintridge, California frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
A ~-1-day frost-free window makes La Cañada Flintridge a short-season garden: choose early varieties and start long-season crops indoors well ahead of the last frost. Zone 10a is warm enough that La Cañada Flintridge can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
PASADENA · 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 La Cañada Flintridge’s own odds, recorded at PASADENA.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Feb 27 | Jan 17 | Dec 18 | Dec 5 | Dec 28 | Feb 7 |
| 32°F | Feb 17 | Jan 8 | Dec 20 | Dec 20 | Jan 7 | Feb 14 |
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 La Cañada Flintridge, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 14 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.
La Cañada Flintridge planting FAQ
When is the last spring frost in La Cañada Flintridge, CA?
Plan for the last spring frost in La Cañada Flintridge around January 8 (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 La Cañada Flintridge, CA?
Expect La Cañada Flintridge's first fall frost near January 7 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is La Cañada Flintridge in?
La Cañada Flintridge is in USDA hardiness zone 10a. In zone 10a, winters are mild — many tender perennials overwinter here.
How long is the growing season in La Cañada Flintridge?
There are roughly -1 frost-free days in La Cañada Flintridge (a short growing season), running from the average last frost around January 8 to the first fall frost near January 7.
When should I plant tomatoes in La Cañada Flintridge?
In La Cañada Flintridge, start tomato seeds indoors around November 13–November 27, then transplant seedlings outdoors around January 15 once the danger of frost has passed.
Never miss a window in La Cañada Flintridge
An email when it’s time to start seeds, transplant, and sow — timed to La Cañada Flintridge’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- La Crescenta-Montrose · 4 km
- Glendale · 5 km
- Altadena · 6 km
- Pasadena · 8 km
- Burbank · 12 km
- South Pasadena · 12 km
- San Marino · 13 km
- Sierra Madre · 15 km
Frost dates recorded at PASADENA, 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 La Cañada Flintridge, CA — Frost Dates & Zone 10a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00046719. Retrieved from https://blissgarden.com/california/la-canada-flintridge.