When to plant in Wasco, CA
USDA Zone 9aEverything below — frost dates, hardiness zone, and what to plant when in Wasco, California — is derived from the closest NOAA station with complete climate normals.
With about 308 frost-free days, Wasco supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. In zone 9a, frost is a minor factor for Wasco — most perennials thrive, and annual vegetables can go out early and stay late.
The average last spring frost in Wasco is now 18 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
WASCO · 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 Wasco’s own odds, recorded at WASCO.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 25 | Feb 26 | Jan 30 | Nov 9 | Nov 24 | Dec 10 |
| 32°F | Feb 27 | Jan 31 | Jan 2 | Nov 21 | Dec 5 | Jan 2 |
| 28°F | Feb 4 | Jan 4 | Dec 8 | Nov 29 | Dec 16 | Jan 16 |
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 Wasco, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 23 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.
Wasco planting FAQ
When is the last spring frost in Wasco, CA?
On average, the last spring frost in Wasco is around January 31 (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 Wasco, CA?
The first fall frost in Wasco typically arrives around December 5 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Wasco in?
Wasco is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Wasco?
Wasco has about 308 frost-free days — a long growing season — between the average last spring frost (January 31) and first fall frost (December 5).
When should I plant tomatoes in Wasco?
For Wasco, sow tomatoes indoors about December 6–December 20 and move the seedlings out around February 7, after the last spring frost.
Never miss a window in Wasco
An email when it’s time to start seeds, transplant, and sow — timed to Wasco’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- McFarland · 15 km
- Shafter · 20 km
- Delano · 21 km
- Rosedale · 27 km
- Oildale · 36 km
- Bakersfield · 40 km
- East Bakersfield · 43 km
- Hillcrest · 44 km
Frost dates recorded at WASCO, 1 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 Wasco, CA — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00049452. Retrieved from https://blissgarden.com/california/wasco.