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Chill hours in P7K

The short answer

P7K averages 1,056 chill hours per winter (6691,435 across 10 years) in USDA zone 4b.
P7K climate
Average chill hours1,056 (669–1,435 across 10 winters)
USDA hardiness zone4b (NRCan zone 3b)
Last spring frosttypically May 3 – May 19
First fall frosttypically September 29 – October 25

Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023 / NRCan 1981–2010. Data updated July 3, 2026. See methodology.

Every variety in our database, checked against P7K’s chill hours and zone:

How many chill hours does P7K get?
P7K averages 1056 chill hours per winter, ranging from 669 to 1435 across the last 10 years.
What hardiness zone is P7K?
P7K is in USDA hardiness zone 4b.

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Sources

  1. [1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
  2. [2] Natural Resources Canada. Plant Hardiness Zones of Canada — accessed July 2026