How many chill hours does 12973 get?

12973 averages 1106 chill hours per winter, ranging from 900 to 1505 across the last 10 years.

What hardiness zone is 12973?

12973 is in USDA hardiness zone 4a.

Location almanac

The short answer

12973 averages 1,106 chill hours per winter (900–1,505 across 10 years) in USDA zone 4a.

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 12973’s chill hours and zone:

Chill and zone requirements are comfortably met in 12973.

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How many chill hours does 12973 get?: 12973 averages 1106 chill hours per winter, ranging from 900 to 1505 across the last 10 years.
What hardiness zone is 12973?: 12973 is in USDA hardiness zone 4a.

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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