When to plant in Glendale, CA
USDA Zone 10aGlendale, California frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
A generous ~358-day season lets Glendale gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. Zone 10a is warm enough that Glendale 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 Glendale’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 Glendale, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 10 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.
Glendale planting FAQ
When is the last spring frost in Glendale, CA?
On average, the last spring frost in Glendale is around January 2 (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 Glendale, CA?
The first fall frost in Glendale typically arrives around December 26 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Glendale in?
Glendale is in USDA hardiness zone 10a. In zone 10a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Glendale?
There are roughly 358 frost-free days in Glendale (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 Glendale?
In Glendale, 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 Glendale
An email when it’s time to start seeds, transplant, and sow — timed to Glendale’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- La Cañada Flintridge · 5 km
- La Crescenta-Montrose · 6 km
- Burbank · 7 km
- Pasadena · 10 km
- Altadena · 10 km
- South Pasadena · 12 km
- San Marino · 14 km
- Alhambra · 15 km
Frost dates recorded at BURBANK VALLEY PUMP PLT, 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 Glendale, CA — Frost Dates & Zone 10a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00041194. Retrieved from https://blissgarden.com/california/glendale.