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Chill hours in P0N

The short answer

P0N averages 1,001 chill hours per winter (7221,217 across 10 years) in USDA zone 4a.
P0N climate
Average chill hours1,001 (722–1,217 across 10 winters)
USDA hardiness zone4a (NRCan zone 2b)
Last spring frosttypically May 7 – May 23
First fall frosttypically October 10 – October 28

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 P0N’s chill hours and zone:

How many chill hours does P0N get?
P0N averages 1001 chill hours per winter, ranging from 722 to 1217 across the last 10 years.
What hardiness zone is P0N?
P0N is in USDA hardiness zone 4a.

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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