Product Q&A

Answer:

Per the product label, for black spot on roses: 
Mix 5-8 fl. oz. of Propiconazole 14.3 Fungicide 14.3 in 100 gals. of water and apply as a full coverage spray to the point of drip. Apply as needed, beginning when conditions are favorable for disease development. For blackspot, apply with a registered contact fungicide labeled for black spot.  
That would break down to about 1.5 - 2.5 mL of concentrate per gallon of water.
 
Since this is a more commercial product, if you are treating home roses, then you may consider a formulation that is easier to measure for smaller applications, such as Fertilome Liquid Systemic Fungicide II:
 
https://www.domyown.com/fertilome-liquid-systemic-fungicide-ii-p-1540.html
 
This product is used at 1-2 tablespoons per gal of water for roses and flowers.
 
 

Answer last updated on: 06/21/2022

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