What plant hardiness zone is Thompson Falls

Thompson Falls is located at Sanders County, Montana (MT), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Thompson Falls is 6a by the USDA scale.

Coldest zone's winter temperature is −10 … -5 °F.

Plants of 6a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 6a USDA.

Thompson Falls, Montana @ wikipedia.