What plant hardiness zone is Round O

Round O is located at Colleton County, South Carolina (SC), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Round O is 8b by the USDA scale.

Coldest zone's winter temperature is +15 … +20 °F.

Plants of 8b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 8b USDA.

Round O, South Carolina @ wikipedia.