What plant hardiness zone is Port Sanilac

Port Sanilac is located at Sanilac County, Michigan (MI), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Port Sanilac 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.

Port Sanilac, Michigan @ wikipedia.