How many chill hours does 20170 get?

20170 averages 1576 chill hours per winter, ranging from 1351 to 1825 across the last 10 years.

What hardiness zone is 20170?

20170 is in USDA hardiness zone 7b.

Location almanac

The short answer

20170 averages 1,576 chill hours per winter (1,351–1,825 across 10 years) in USDA zone 7b.

20170 climate
Average chill hours	1,576 (1,351–1,825 across 10 winters)
USDA hardiness zone	7b
Last spring frost	typically March 27 – April 18
First fall frost	typically November 5 – November 23

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 20170’s chill hours and zone:

Chill and zone requirements are comfortably met in 20170.

Show 131 more good fit varieties

How many chill hours does 20170 get?: 20170 averages 1576 chill hours per winter, ranging from 1351 to 1825 across the last 10 years.
What hardiness zone is 20170?: 20170 is in USDA hardiness zone 7b.

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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