What plant hardiness zone is Three Bridges

Three Bridges is located at Hunterdon County, New Jersey (NJ), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Three Bridges is 6a by the USDA scale.

Coldest zone's winter temperature is −10 … -5 °F.

Plants of 6a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 6a USDA.

Three Bridges, New Jersey @ wikipedia.