How many chill hours does 56520 get?

56520 averages 1077 chill hours per winter, ranging from 756 to 1338 across the last 10 years.

What hardiness zone is 56520?

56520 is in USDA hardiness zone 4a.

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The short answer

56520 averages 1,077 chill hours per winter (756–1,338 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 56520’s chill hours and zone:

Chill and zone requirements are comfortably met in 56520.

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How many chill hours does 56520 get?: 56520 averages 1077 chill hours per winter, ranging from 756 to 1338 across the last 10 years.
What hardiness zone is 56520?: 56520 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