What plant hardiness zone is Union

Union is located at Union County, South Carolina (SC), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Union is 7b by the USDA scale.

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

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

Union, South Carolina @ wikipedia.