What plant hardiness zone is Spring Green

Spring Green is located at Sauk County, Wisconsin (WI), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Spring Green is 4b by the USDA scale.

Coldest zone's winter temperature is −25 … -20 °F.

Plants of 4b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 4b USDA.