What plant hardiness zone is Iron Horse

Iron Horse is located at Plumas County, California (CA), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Iron Horse is 6b by the USDA scale.

Coldest zone's winter temperature is −5 … 0 °F.

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

Iron Horse, California @ wikipedia.