How many chill hours does 17220 get?

17220 averages 1661 chill hours per winter, ranging from 1328 to 1941 across the last 10 years.

What hardiness zone is 17220?

17220 is in USDA hardiness zone 7a.

Location almanac

The short answer

17220 averages 1,661 chill hours per winter (1,328–1,941 across 10 years) in USDA zone 7a.

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 17220’s chill hours and zone:

Chill and zone requirements are comfortably met in 17220.

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How many chill hours does 17220 get?: 17220 averages 1661 chill hours per winter, ranging from 1328 to 1941 across the last 10 years.
What hardiness zone is 17220?: 17220 is in USDA hardiness zone 7a.

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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