When to plant in Valencia West, AZ
USDA Zone 9aEverything below — frost dates, hardiness zone, and what to plant when in Valencia West, Arizona — is derived from the closest NOAA station with complete climate normals.
With about 305 frost-free days, Valencia West 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 Valencia West — most perennials thrive, and annual vegetables can go out early and stay late.
Frost probability
TUCSON 11 W · 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 Valencia West’s own odds, recorded at TUCSON 11 W.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 29 | Mar 4 | Feb 6 | Nov 11 | Nov 29 | Dec 13 |
| 32°F | Mar 8 | Feb 8 | Jan 6 | Nov 22 | Dec 10 | Jan 3 |
| 28°F | Feb 18 | Jan 20 | Dec 15 | Nov 30 | Dec 27 | Feb 1 |
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 Valencia West, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 15 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.
Valencia West planting FAQ
When is the last spring frost in Valencia West, AZ?
On average, the last spring frost in Valencia West is around February 8 (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 Valencia West, AZ?
In Valencia West, the first 32°F freeze of fall lands around December 10 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Valencia West in?
Valencia West is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Valencia West?
Valencia West has about 305 frost-free days — a long growing season — between the average last spring frost (February 8) and first fall frost (December 10).
When should I plant tomatoes in Valencia West?
For Valencia West, sow tomatoes indoors about December 14–December 28 and move the seedlings out around February 15, after the last spring frost.
Never miss a window in Valencia West
An email when it’s time to start seeds, transplant, and sow — timed to Valencia West’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Tucson Estates · 5 km
- Drexel Heights · 6 km
- Tucson Mountains · 17 km
- Flowing Wells · 20 km
- Tucson · 23 km
- Casas Adobes · 25 km
- Sahuarita · 26 km
- Catalina Foothills · 28 km
Frost dates recorded at TUCSON 11 W, 13 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 Valencia West, AZ — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00053131. Retrieved from https://blissgarden.com/arizona/valencia-west.