What plant hardiness zone is Big Hole Natl Battlefield

Big Hole Natl Battlefield is located at Beaverhead County, Montana (MT), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Big Hole Natl Battlefield is 3b by the USDA scale.

Coldest zone's winter temperature is −35 … -30 °F.

Plants of 3b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 3b USDA.