Westchester County, New York is in USDA Hardiness Zones 6a, 6b and 7a

Westchester County, New York Hardiness Zone Map

Westchester County Border
Zone 6a
-10°F to -5°F
Zone 6b
-5°F to 0°F
Zone 7a
0°F to 5°F

A hardiness zone is a geographically defined area in which a specific category of plant life is capable of growing, as defined by climatic conditions, including its ability to withstand the minimum temperatures of the zone.

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