When to plant in Buckeye, AZ
USDA Zone 9bEverything below — frost dates, hardiness zone, and what to plant when in Buckeye, Arizona — is derived from the closest NOAA station with complete climate normals.
A generous ~351-day season lets Buckeye gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. Heads up: the nearest complete-normals station is about 27 km from Buckeye, so your yard's frost dates can differ — a low spot or a paved city center can shift them by a week. In zone 9b, frost is a minor factor for Buckeye — most perennials thrive, and annual vegetables can go out early and stay late.
The average last spring frost in Buckeye is now 5 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
LITCHFIELD PARK · 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 Buckeye’s own odds, recorded at LITCHFIELD PARK.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Feb 24 | Jan 31 | Jan 4 | Nov 24 | Dec 9 | Dec 28 |
| 32°F | Feb 5 | Jan 7 | Dec 17 | Dec 6 | Dec 24 | Jan 16 |
| 28°F | Jan 22 | Jan 5 | Dec 21 | Dec 18 | Jan 4 | Jan 21 |
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 Buckeye, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 40 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.
Buckeye planting FAQ
When is the last spring frost in Buckeye, AZ?
Plan for the last spring frost in Buckeye around January 7 (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 Buckeye, AZ?
The first fall frost in Buckeye typically arrives around December 24 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Buckeye in?
Buckeye is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Buckeye?
Buckeye has about 351 frost-free days — a long growing season — between the average last spring frost (January 7) and first fall frost (December 24).
When should I plant tomatoes in Buckeye?
For Buckeye, sow tomatoes indoors about November 12–November 26 and move the seedlings out around January 14, after the last spring frost.
Never miss a window in Buckeye
An email when it’s time to start seeds, transplant, and sow — timed to Buckeye’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at LITCHFIELD PARK, 27 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 Buckeye, AZ — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00024977. Retrieved from https://blissgarden.com/arizona/buckeye.