what zone is north carolina

North Carolina's USDA Plant Hardiness Zones range from 6a to 9a. This means the state experiences minimum winter temperatures from about -10°F in the coldest northwestern areas (zone 6a) to around 20°F in the warmest southeastern coastal regions (zone 9a). The zones are further divided into subzones 'a' and 'b' based on 5-degree temperature increments, reflecting the state's varied climate