"Carolina Sapphires" primarily refer to the Carolina Sapphire Cypress (Hesperocyparis arizonica 'Carolina Sapphire'), a fast-growing, aromatic evergreen tree prized for its striking silvery-blue to teal foliage, excellent for privacy screens, windbreaks, or as a specimen, tolerating heat and drought well once established in USDA Zones 6-9/10. It's also a popular Christmas tree for its unique color, scent, and strong branches.