When to plant in Bellflower, CA
USDA Zone 10bBellflower, California frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
With only about -4 frost-free days, Bellflower has a short season — start heat-lovers indoors early, favor quick-maturing varieties, and use row cover to stretch both ends. These dates come from a station roughly 22 km away, the closest with full normals; terrain around Bellflower (elevation, water, pavement) can move your real frost dates a few days either way. Zone 10b is warm enough that Bellflower can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
TORRANCE AP · 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 Bellflower’s own odds, recorded at TORRANCE AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 5 | Jan 17 | Dec 12 | Dec 1 | Dec 31 | Feb 20 |
| 32°F | Feb 24 | Jan 9 | Dec 4 | Dec 3 | Jan 5 | Feb 22 |
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 Bellflower, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 29 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.
Bellflower planting FAQ
When is the last spring frost in Bellflower, CA?
Bellflower's average last spring frost falls near January 9 — 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 Bellflower, CA?
In Bellflower, the first 32°F freeze of fall lands around January 5 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Bellflower in?
Bellflower is in USDA hardiness zone 10b. In zone 10b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Bellflower?
There are roughly -4 frost-free days in Bellflower (a short growing season), running from the average last frost around January 9 to the first fall frost near January 5.
When should I plant tomatoes in Bellflower?
In Bellflower, start tomato seeds indoors around November 14–November 28, then transplant seedlings outdoors around January 16 once the danger of frost has passed.
Never miss a window in Bellflower
An email when it’s time to start seeds, transplant, and sow — timed to Bellflower’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Paramount · 4 km
- Lakewood · 5 km
- Norwalk · 5 km
- Artesia · 5 km
- Downey · 6 km
- Cerritos · 6 km
- East Rancho Dominguez · 6 km
- Santa Fe Springs · 8 km
Frost dates recorded at TORRANCE AP, 22 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 Bellflower, CA — Frost Dates & Zone 10b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00003122. Retrieved from https://blissgarden.com/california/bellflower.