When to plant in Eloy, AZ
USDA Zone 9aEverything below — frost dates, hardiness zone, and what to plant when in Eloy, Arizona — is derived from the closest NOAA station with complete climate normals.
With about 277 frost-free days, Eloy supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. Zone 9a is warm enough that Eloy can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
ELOY 4 NE · 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 Eloy’s own odds, recorded at ELOY 4 NE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 11 | Mar 17 | Feb 25 | Oct 30 | Nov 17 | Dec 1 |
| 32°F | Mar 18 | Feb 24 | Jan 30 | Nov 11 | Nov 28 | Dec 13 |
| 28°F | Feb 28 | Feb 3 | Jan 5 | Nov 23 | Dec 8 | Jan 1 |
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 Eloy, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 9 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.
Eloy planting FAQ
When is the last spring frost in Eloy, AZ?
Plan for the last spring frost in Eloy around February 24 (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 Eloy, AZ?
The first fall frost in Eloy typically arrives around November 28 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Eloy in?
Eloy is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Eloy?
There are roughly 277 frost-free days in Eloy (a long growing season), running from the average last frost around February 24 to the first fall frost near November 28.
When should I plant tomatoes in Eloy?
In Eloy, start tomato seeds indoors around December 30–January 13, then transplant seedlings outdoors around March 3 once the danger of frost has passed.
Never miss a window in Eloy
An email when it’s time to start seeds, transplant, and sow — timed to Eloy’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Coolidge · 22 km
- Casa Grande · 24 km
- Florence · 40 km
- San Tan Valley · 49 km
- Maricopa · 50 km
- Marana · 53 km
- Queen Creek · 55 km
- Sun Lakes · 59 km
Frost dates recorded at ELOY 4 NE, 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 Eloy, AZ — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00022807. Retrieved from https://blissgarden.com/arizona/eloy.