When to plant in Drexel Heights, AZ
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Drexel Heights, Arizona — all computed from Drexel Heights's nearest NOAA weather station.
Drexel Heights enjoys a long ~307-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. Zone 9b is warm enough that Drexel Heights can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average last spring frost in Drexel Heights is now 7 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
TUCSON INTL 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 Drexel Heights’s own odds, recorded at TUCSON INTL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 24 | Feb 28 | Feb 3 | Nov 11 | Nov 26 | Dec 14 |
| 32°F | Mar 2 | Feb 5 | Jan 4 | Nov 21 | Dec 9 | Jan 3 |
| 28°F | Feb 17 | Jan 11 | Dec 14 | Nov 30 | Dec 26 | 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 Drexel Heights, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 13 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.
Drexel Heights planting FAQ
When is the last spring frost in Drexel Heights, AZ?
Drexel Heights's average last spring frost falls near February 5 — 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 Drexel Heights, AZ?
Expect Drexel Heights's first fall frost near December 9 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Drexel Heights in?
Drexel Heights is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Drexel Heights?
There are roughly 307 frost-free days in Drexel Heights (a long growing season), running from the average last frost around February 5 to the first fall frost near December 9.
When should I plant tomatoes in Drexel Heights?
In Drexel Heights, start tomato seeds indoors around December 11–December 25, then transplant seedlings outdoors around February 12 once the danger of frost has passed.
Never miss a window in Drexel Heights
An email when it’s time to start seeds, transplant, and sow — timed to Drexel Heights’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Valencia West · 6 km
- Tucson Estates · 8 km
- Tucson Mountains · 15 km
- Tucson · 17 km
- Flowing Wells · 17 km
- Casas Adobes · 22 km
- Catalina Foothills · 23 km
- Sahuarita · 25 km
Frost dates recorded at TUCSON INTL AP, 9 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 Drexel Heights, AZ — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00023160. Retrieved from https://blissgarden.com/arizona/drexel-heights.