Answer:

For powdery mildew on roses, the rate of use is 5-8 oz of Propiconazole 14.3 Fungicide to 100 gallons of water or 0.05 to 0.08 oz (1.5 to 2.37 mL) per gallon of water.

Please read the product label for complete application instructions.  

Answer last updated on: 04/04/2022