USDA hardiness zone lookup
Prescott, AZ — USDA Zone 7a
Prescott, Arizona · 146-day growing season
Frost dates and growing season in Prescott
| USDA hardiness zone | Zone 7a |
|---|---|
| Average last spring frost | May 12 |
| Average first fall frost | October 5 |
| Growing season length | ~146 days |
| Temperature range (F) | 0 to 10°F |
| Temperature range (C) | -18 to -12°C |
All of Prescott's mapped ZIP codes fall in the same hardiness band, Zone 7a.
These are 50%-probability averages modeled from Prescott's USDA hardiness zone and regional climate normals — not a single-station reading. In a typical year the last spring frost will have passed by May 12, but a colder-than-average year can run 1-2 weeks later. Plant tender crops (tomatoes, peppers, basil) once both soil and night temperatures are consistently warm — a thermometer beats the calendar.
Growing season in Prescott
Prescott, Arizona sits in USDA Zone 7a, with roughly 146 frost-free days between an average last spring frost around May 12 and a first fall frost around October 5. That is a standard temperate season — most common vegetables finish comfortably, and a single main planting plus one succession round works well.
What grows in Prescott
Prescott falls in USDA Zone 7a, so the same hardiness constraints apply as the full Zone 7 guide. Vegetables, herbs, and fruit trees rated to Zone 7a (or hardier) will overwinter here in a typical year.
- Tomatoes, peppers, eggplant
- Okra
- Sweet potatoes
- Squash, melons
- Beans (lima + pole)
- Figs
- Pomegranates (in protected spots)
- Apples, peaches, plums, pears
- Blueberries (rabbiteye + highbush)
- Asparagus, rhubarb
What to plant in Prescott this week
Prescott's last frost is around May 12. This is the spring transplant window — start tomatoes and peppers indoors if you haven't, and direct-sow cold-tolerant crops now.
- When to plant tomatoes in zone 7
- When to plant peppers in zone 7
- When to plant basil in zone 7
- When to plant bush beans in zone 7
- When to plant cucumbers in zone 7
Full planting calendar for Prescott
Crop-by-crop sowing, transplant, and harvest dates calibrated to zone 7 averages:
- When to plant tomatoes in zone 7
- When to plant peppers in zone 7
- When to plant basil in zone 7
- When to plant garlic in zone 7
- When to plant lettuce in zone 7
- When to plant bush beans in zone 7
- When to plant cucumbers in zone 7
- When to plant summer squash in zone 7
- When to plant peas in zone 7
- When to plant carrots in zone 7
ZIP codes in Prescott
Drill down to the precise frost window and planting calendar for a specific ZIP in Prescott:
Local microclimate notes
Zone tables give you the average — but Prescottgardens vary. South-facing walls and paved areas can run a full half-zone warmer than the published rating. Low-lying spots, frost pockets, and shaded north sides can run colder. If you've gardened here a few seasons, your own frost record — the last time you actually got frost damage — beats any national average.
Source and methodology
Hardiness zone from the USDA Plant Hardiness Zone Map (2023 revision). Frost-date and growing-season figures are modeled from Prescott's USDA hardiness zone and regional NOAA 1991-2020 climate normals — zone-level estimates, not a per-station record, so treat them as planning guidance and confirm against your own local frost history. Crop recommendations draw on US Cooperative Extension references, curated by the Growli editorial team. Last reviewed June 2026.
Other cities in Arizona
- Apache Junction, AZ — USDA Zone 9b
- Avondale, AZ — USDA Zone 9b
- Buckeye, AZ — USDA Zone 9b
- Bullhead City, AZ — USDA Zone 10a
- Chandler, AZ — USDA Zone 9b
- Cottonwood, AZ — USDA Zone 8a
- Flagstaff, AZ — USDA Zone 6a
- Glendale, AZ — USDA Zone 9b
- Goodyear, AZ — USDA Zone 9b
- Mesa, AZ — USDA Zone 9b
- Peoria, AZ — USDA Zone 9b
- Phoenix, AZ — USDA Zone 9b
- All of Arizona by zone