The purple “River of Phlox” flows down the hillside alongside the rocky stream, a centerpiece in the woodland oasis that is the Atlanta Botanical Garden, Gainesville — A Smithgall Woodland Legacy. The new garden is lush with more than 1,200 different types of plants, including more than 300 hydrangeas, 150 magnolias and 32 different maple species amidst towering hardwoods. And now the public can enjoy the natural bounty that is on display at Gainesville’s and Georgia’s newest gem.