What plant hardiness zone is Glen Rock
Glen Rock is located at Bergen County, New Jersey (NJ), USA.
Plant hardiness zone (winter frost zone or gardening zone) for Glen Rock is 6b by the USDA scale.
Coldest zone's winter temperature is −5 … 0 °F.
Plants of 6b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 6b USDA.
Glen Rock, New Jersey @ wikipedia.