How many chill hours does 28705 get?

28705 averages 1557 chill hours per winter, ranging from 1222 to 1905 across the last 10 years.

What hardiness zone is 28705?

28705 is in USDA hardiness zone 7a.

Location almanac

The short answer

28705 averages 1,557 chill hours per winter (1,222–1,905 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 28705’s chill hours and zone:

Chill and zone requirements are comfortably met in 28705.

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How many chill hours does 28705 get?: 28705 averages 1557 chill hours per winter, ranging from 1222 to 1905 across the last 10 years.
What hardiness zone is 28705?: 28705 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