sooby said:Phlox are prone to powdery mildew. 'Bright Eyes' is reported to have some resistance so isn't one of the worst. I'm doubtful that only one spraying would be sufficient if you find it has more mildew than you wish to tolerate - the level of mildew also varies depending on the weather in a particular year. This article on powdery mildew may be of interest:
http://www.clemson.edu/extensi...