When to plant in Potomac Park, CA
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Potomac Park, California — all computed from Potomac Park's nearest NOAA weather station.
With about 311 frost-free days, Potomac Park supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. Zone 9b is warm enough that Potomac Park can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
BAKERSFIELD 5 NW · 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 Potomac Park’s own odds, recorded at BAKERSFIELD 5 NW.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 2 | Mar 2 | Feb 3 | Nov 11 | Nov 26 | Dec 11 |
| 32°F | Feb 27 | Jan 31 | Dec 31 | Nov 23 | Dec 8 | Jan 1 |
| 28°F | Feb 1 | Jan 3 | Dec 14 | Dec 2 | Dec 20 | Jan 20 |
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 Potomac Park, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 21 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.
Potomac Park planting FAQ
When is the last spring frost in Potomac Park, CA?
Potomac Park's average last spring frost falls near January 31 — 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 Potomac Park, CA?
In Potomac Park, the first 32°F freeze of fall lands around December 8 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Potomac Park in?
Potomac Park is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Potomac Park?
There are roughly 311 frost-free days in Potomac Park (a long growing season), running from the average last frost around January 31 to the first fall frost near December 8.
When should I plant tomatoes in Potomac Park?
In Potomac Park, start tomato seeds indoors around December 6–December 20, then transplant seedlings outdoors around February 7 once the danger of frost has passed.
Never miss a window in Potomac Park
An email when it’s time to start seeds, transplant, and sow — timed to Potomac Park’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Hillcrest · 2 km
- East Bakersfield · 2 km
- East Niles · 4 km
- Bakersfield · 7 km
- Oildale · 9 km
- Lamont · 12 km
- Rosedale · 22 km
- Arvin · 22 km
Frost dates recorded at BAKERSFIELD 5 NW, 10 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 Potomac Park, CA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00040444. Retrieved from https://blissgarden.com/california/potomac-park.