When to plant in Oak Park, CA
USDA Zone 10bOak Park, California frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
With about 325 frost-free days, Oak Park supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. These dates come from a station roughly 18 km away, the closest with full normals; terrain around Oak Park (elevation, water, pavement) can move your real frost dates a few days either way. In zone 10b, frost is a minor factor for Oak Park — most perennials thrive, and annual vegetables can go out early and stay late.
Frost probability
WOODLAND HILLS PIERCE COLLEGE · 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 Oak Park’s own odds, recorded at WOODLAND HILLS PIERCE COLLEGE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 7 | Mar 2 | Jan 30 | Nov 12 | Nov 29 | Dec 19 |
| 32°F | Mar 5 | Jan 24 | Dec 21 | Nov 27 | Dec 15 | Jan 26 |
| 28°F | Feb 1 | Dec 31 | Dec 5 | Dec 1 | Dec 26 | Jan 25 |
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 Oak Park, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 26 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.
Oak Park planting FAQ
When is the last spring frost in Oak Park, CA?
Oak Park's average last spring frost falls near January 24 — 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 Oak Park, CA?
In Oak Park, the first 32°F freeze of fall lands around December 15 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Oak Park in?
Oak Park is in USDA hardiness zone 10b. In zone 10b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Oak Park?
Oak Park has about 325 frost-free days — a long growing season — between the average last spring frost (January 24) and first fall frost (December 15).
When should I plant tomatoes in Oak Park?
For Oak Park, sow tomatoes indoors about November 29–December 13 and move the seedlings out around January 31, after the last spring frost.
Never miss a window in Oak Park
An email when it’s time to start seeds, transplant, and sow — timed to Oak Park’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Agoura Hills · 4 km
- Simi Valley · 9 km
- Thousand Oaks · 10 km
- Calabasas · 11 km
- Moorpark · 15 km
- Malibu · 18 km
- Camarillo · 25 km
- Fillmore · 28 km
Frost dates recorded at WOODLAND HILLS PIERCE COLLEGE, 18 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 Oak Park, CA — Frost Dates & Zone 10b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00049785. Retrieved from https://blissgarden.com/california/oak-park.