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Chill hours in T0G

The short answer

T0G averages 1,087 chill hours per winter (7641,325 across 10 years) in USDA zone 3b.
T0G climate
Average chill hours1,087 (764–1,325 across 10 winters)
USDA hardiness zone3b (NRCan zone 2b)
Last spring frosttypically May 7 – May 21
First fall frosttypically September 22 – October 10

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 T0G’s chill hours and zone:

How many chill hours does T0G get?
T0G averages 1087 chill hours per winter, ranging from 764 to 1325 across the last 10 years.
What hardiness zone is T0G?
T0G is in USDA hardiness zone 3b.

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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