When to plant in Anderson, CA
USDA Zone 9aEverything below — frost dates, hardiness zone, and what to plant when in Anderson, California — is derived from the closest NOAA station with complete climate normals.
With about 263 frost-free days, Anderson 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 Anderson — most perennials thrive, and annual vegetables can go out early and stay late.
The average last spring frost in Anderson is now 7 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
REDDING MUNI 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 Anderson’s own odds, recorded at REDDING MUNI AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 26 | Apr 7 | Mar 9 | Oct 28 | Nov 9 | Nov 22 |
| 32°F | Apr 9 | Mar 3 | Jan 31 | Nov 7 | Nov 21 | Dec 7 |
| 28°F | Mar 1 | Jan 27 | Dec 20 | Nov 20 | Dec 7 | Jan 5 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Anderson, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 31 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.
Anderson planting FAQ
When is the last spring frost in Anderson, CA?
Anderson's average last spring frost falls near March 3 — 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 Anderson, CA?
The first fall frost in Anderson typically arrives around November 21 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Anderson in?
Anderson is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Anderson?
Anderson has about 263 frost-free days — a long growing season — between the average last spring frost (March 3) and first fall frost (November 21).
When should I plant tomatoes in Anderson?
For Anderson, sow tomatoes indoors about January 6–January 20 and move the seedlings out around March 10, after the last spring frost.
Never miss a window in Anderson
An email when it’s time to start seeds, transplant, and sow — timed to Anderson’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Redding · 15 km
- Shasta Lake · 26 km
- Red Bluff · 31 km
- Chico · 87 km
- Oroville · 123 km
- Susanville · 141 km
- Marysville · 157 km
- Fortuna · 157 km
Frost dates recorded at REDDING MUNI AP, 8 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 Anderson, CA — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00024257. Retrieved from https://blissgarden.com/california/anderson.