What plant hardiness zone is White River

White River is located at Mellette County, South Dakota (SD), USA.

Plant hardiness zone (winter frost zone or gardening zone) for White River 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.

White River, South Dakota @ wikipedia.