Heather Phan, center, one of dozens of volunteers from Publix Super Markets, works to remove the seeds of the beach vitex plant, an invasive species, at Myrtle Beach State Park in South Carolina. JASON LEE/THE SUN NEWS VIA AP
Chase Karacostas The Sun News MYRTLE BEACH, S.C. – In late spring, beach vitex plants bloom gorgeous purple flowers that add a bright flash of…