What plant hardiness zone is Yellowstone Natl Park

Yellowstone Natl Park is located at Teton County, Wyoming (WY), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Yellowstone Natl Park 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.