USDA hardiness zone lookup
Bullhead City, AZ — USDA Zone 10a
Bullhead City, Arizona · 316-day growing season
Frost dates and growing season in Bullhead City
| USDA hardiness zone | Zone 10a |
|---|---|
| Average last spring frost | January 30 |
| Average first fall frost | December 12 |
| Growing season length | ~316 days |
| Temperature range (F) | 30 to 40°F |
| Temperature range (C) | -1 to 4°C |
All of Bullhead City's mapped ZIP codes fall in the same hardiness band, Zone 10a.
These are 50%-probability averages modeled from Bullhead City'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 January 30, 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 Bullhead City
Bullhead City, Arizona sits in USDA Zone 10a, with roughly 316 frost-free days between an average last spring frost around January 30 and a first fall frost around December 12. That is a near year-round season — the limiting factor is summer heat, not frost, so schedule cool-season crops for winter and protect tender ones from extreme highs.
What grows in Bullhead City
Bullhead City falls in USDA Zone 10a, so the same hardiness constraints apply as the full Zone 10 guide. Vegetables, herbs, and fruit trees rated to Zone 10a (or hardier) will overwinter here in a typical year.
- Tomatoes (winter crop, summer break)
- Citrus (full range)
- Avocado
- Mango, papaya, passion fruit
- Banana
- Pineapple
- Tropical herbs (lemongrass, Thai basil)
- Sweet potatoes
- Eggplant (year-round)
- Hot peppers
What to plant in Bullhead City this week
Warm-season tropicals do well in Bullhead City right now. Watch for midsummer heat stress on tomatoes — short-day varieties or shade cloth help.
- When to plant tomatoes in zone 10
- When to plant peppers in zone 10
- When to plant basil in zone 10
- When to plant cucumbers in zone 10
- When to plant summer squash in zone 10
Full planting calendar for Bullhead City
Crop-by-crop sowing, transplant, and harvest dates calibrated to zone 10 averages:
- When to plant tomatoes in zone 10
- When to plant peppers in zone 10
- When to plant basil in zone 10
- When to plant garlic in zone 10
- When to plant lettuce in zone 10
- When to plant bush beans in zone 10
- When to plant cucumbers in zone 10
- When to plant summer squash in zone 10
- When to plant peas in zone 10
- When to plant carrots in zone 10
ZIP codes in Bullhead City
Drill down to the precise frost window and planting calendar for a specific ZIP in Bullhead City:
Local microclimate notes
Zone tables give you the average — but Bullhead Citygardens 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 Bullhead City'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
- 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
- Prescott, AZ — USDA Zone 7a
- All of Arizona by zone