How many chill hours does 56590 get?

56590 averages 1074 chill hours per winter, ranging from 744 to 1347 across the last 10 years.

What hardiness zone is 56590?

56590 is in USDA hardiness zone 4a.

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The short answer

56590 averages 1,074 chill hours per winter (744–1,347 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 56590’s chill hours and zone:

Chill and zone requirements are comfortably met in 56590.

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How many chill hours does 56590 get?: 56590 averages 1074 chill hours per winter, ranging from 744 to 1347 across the last 10 years.
What hardiness zone is 56590?: 56590 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