What plant hardiness zone is River Vale
River Vale is located at Bergen County, New Jersey (NJ), USA.
Plant hardiness zone (winter frost zone or gardening zone) for River Vale 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.
River Vale, New Jersey @ wikipedia.