What plant hardiness zone is Lost River

Lost River is located at Custer County, Idaho (ID), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Lost River is 4a by the USDA scale.

Coldest zone's winter temperature is −30 … -25 °F.

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