How many chill hours does 73170 get?

73170 averages 1213 chill hours per winter, ranging from 943 to 1558 across the last 10 years.

What hardiness zone is 73170?

73170 is in USDA hardiness zone 7b.

Location almanac

The short answer

73170 averages 1,213 chill hours per winter (943–1,558 across 10 years) in USDA zone 7b.

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 73170’s chill hours and zone:

Chill and zone requirements are comfortably met in 73170.

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How many chill hours does 73170 get?: 73170 averages 1213 chill hours per winter, ranging from 943 to 1558 across the last 10 years.
What hardiness zone is 73170?: 73170 is in USDA hardiness zone 7b.

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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