What plant hardiness zone is North Billerica

North Billerica is located at Middlesex County, Massachusetts (MA), USA.

Plant hardiness zone (winter frost zone or gardening zone) for North Billerica 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 Billerica, Massachusetts @ wikipedia.