How many chill hours does 56309 get?

56309 averages 1024 chill hours per winter, ranging from 668 to 1332 across the last 10 years.

What hardiness zone is 56309?

56309 is in USDA hardiness zone 4b.

Location almanac

The short answer

56309 averages 1,024 chill hours per winter (668–1,332 across 10 years) in USDA zone 4b.

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 56309’s chill hours and zone:

Chill and zone requirements are comfortably met in 56309.

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How many chill hours does 56309 get?: 56309 averages 1024 chill hours per winter, ranging from 668 to 1332 across the last 10 years.
What hardiness zone is 56309?: 56309 is in USDA hardiness zone 4b.

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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