What plant hardiness zone is North Salem

North Salem is located at Rockingham County, New Hampshire (NH), USA.

Plant hardiness zone (winter frost zone or gardening zone) for North Salem 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.

North Salem, New Hampshire @ wikipedia.