What plant hardiness zone is Watts Bar Dam

Watts Bar Dam is located at Rhea County, Tennessee (TN), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Watts Bar Dam is 7a by the USDA scale.

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

Plants of 7a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 7a USDA.