How many chill hours does 85326 get?

85326 averages 348 chill hours per winter, ranging from 214 to 507 across the last 10 years.

What hardiness zone is 85326?

85326 is in USDA hardiness zone 9b.

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The short answer

85326 averages 348 chill hours per winter (214–507 across 10 years) in USDA zone 9b.

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 85326’s chill hours and zone:

Chill and zone requirements are comfortably met in 85326.

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Possible in a good year or a favorable microclimate — click through for the caveats.

How many chill hours does 85326 get?: 85326 averages 348 chill hours per winter, ranging from 214 to 507 across the last 10 years.
What hardiness zone is 85326?: 85326 is in USDA hardiness zone 9b.

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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