Phlox Ultraviolet is an upright garden phlox from their popular LUMINARY® collection brought to us by Proven Winners®. It has been bred to have all wonderful traits found in phlox, but with improved resistance to powdery mildew that affects this perennial late in the summer when the humidity rises. Very dark, magenta violet flowers are borne above a full, bushy habit of bright green foliage in summertime. It has dark stems and buds, bronzed leaves and is noticebably more floriferous than its predecessors. A garden favorite and a staple of North American native gardens. magenta violet flower panicles produced over bright green foliage.