When to plant in Prunedale, CA
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Prunedale, California — all computed from Prunedale's nearest NOAA weather station.
Prunedale enjoys a long ~319-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. Prunedale's nearest full-normals station sits about 17 km out, so treat these as a close estimate — local microclimate can nudge your first and last frost. In zone 9b, frost is a minor factor for Prunedale — most perennials thrive, and annual vegetables can go out early and stay late.
Frost probability
WATSONVILLE WTR WKS · 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 Prunedale’s own odds, recorded at WATSONVILLE WTR WKS.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 14 | Mar 15 | Feb 4 | Nov 8 | Nov 26 | Dec 12 |
| 32°F | Mar 3 | Jan 28 | Dec 23 | Nov 25 | Dec 13 | Jan 15 |
| 28°F | Jan 30 | Jan 2 | Dec 13 | Dec 4 | Dec 26 | Jan 17 |
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 Prunedale, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 17 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.
Prunedale planting FAQ
When is the last spring frost in Prunedale, CA?
Plan for the last spring frost in Prunedale around January 28 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Prunedale, CA?
In Prunedale, the first 32°F freeze of fall lands around December 13 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Prunedale in?
Prunedale is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Prunedale?
Prunedale has about 319 frost-free days — a long growing season — between the average last spring frost (January 28) and first fall frost (December 13).
When should I plant tomatoes in Prunedale?
For Prunedale, sow tomatoes indoors about December 3–December 17 and move the seedlings out around February 4, after the last spring frost.
Never miss a window in Prunedale
An email when it’s time to start seeds, transplant, and sow — timed to Prunedale’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Salinas · 14 km
- Watsonville · 16 km
- Marina · 19 km
- Gilroy · 23 km
- Hollister · 23 km
- Seaside · 25 km
- Monterey · 31 km
- Pacific Grove · 32 km
Frost dates recorded at WATSONVILLE WTR WKS, 17 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 Prunedale, CA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00049473. Retrieved from https://blissgarden.com/california/prunedale.