When to plant in La Crescenta-Montrose, CA
USDA Zone 10aLa Crescenta-Montrose, California frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
La Crescenta-Montrose enjoys a long ~358-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. Zone 10a is warm enough that La Crescenta-Montrose can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
BURBANK VALLEY PUMP PLT · 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 Crescenta-Montrose’s own odds, recorded at BURBANK VALLEY PUMP PLT.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 10 | Feb 5 | Dec 31 | Nov 23 | Dec 12 | Jan 3 |
| 32°F | Jan 31 | Jan 2 | Dec 11 | Dec 5 | Dec 26 | Jan 18 |
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 Crescenta-Montrose, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 13 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 Crescenta-Montrose planting FAQ
When is the last spring frost in La Crescenta-Montrose, CA?
La Crescenta-Montrose's average last spring frost falls near January 2 — 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 La Crescenta-Montrose, CA?
In La Crescenta-Montrose, the first 32°F freeze of fall lands around December 26 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is La Crescenta-Montrose in?
La Crescenta-Montrose 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 Crescenta-Montrose?
There are roughly 358 frost-free days in La Crescenta-Montrose (a long growing season), running from the average last frost around January 2 to the first fall frost near December 26.
When should I plant tomatoes in La Crescenta-Montrose?
In La Crescenta-Montrose, start tomato seeds indoors around November 7–November 21, then transplant seedlings outdoors around January 9 once the danger of frost has passed.
Never miss a window in La Crescenta-Montrose
An email when it’s time to start seeds, transplant, and sow — timed to La Crescenta-Montrose’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- La Cañada Flintridge · 4 km
- Glendale · 6 km
- Burbank · 10 km
- Altadena · 10 km
- Pasadena · 12 km
- South Pasadena · 16 km
- San Marino · 17 km
- Sierra Madre · 18 km
Frost dates recorded at BURBANK VALLEY PUMP PLT, 12 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 Crescenta-Montrose, CA — Frost Dates & Zone 10a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00041194. Retrieved from https://blissgarden.com/california/la-crescenta-montrose.