What plant hardiness zone is Porterfield

Porterfield is located at Marinette County, Wisconsin (WI), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Porterfield is 5a by the USDA scale.

Coldest zone's winter temperature is −20 … -15 °F.

Plants of 5a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 5a USDA.