How many chill hours does 85501 get?

85501 averages 1569 chill hours per winter, ranging from 1152 to 1902 across the last 10 years.

What hardiness zone is 85501?

85501 is in USDA hardiness zone 9a.

Location almanac

The short answer

85501 averages 1,569 chill hours per winter (1,152–1,902 across 10 years) in USDA zone 9a.

Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023. Data updated July 3, 2026. See methodology.

Every variety in our database, checked against 85501’s chill hours and zone:

Chill and zone requirements are comfortably met in 85501.

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How many chill hours does 85501 get?: 85501 averages 1569 chill hours per winter, ranging from 1152 to 1902 across the last 10 years.
What hardiness zone is 85501?: 85501 is in USDA hardiness zone 9a.

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[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026