Mike from Hoschton, Ga writes
Clearys 3336DG Lite is not labeled to be used on roses. A better option would be the Clearys 3336F Fungicide which is labeled for black spot on roses. The rate is 12-16 fl oz/100 gallon which breaks down to approx 0.12 to 0.16 fl per gallon of water.
Answer last updated on: 06/20/2018