Matt from Claysville, Pa writes
I bought Fung-onil to treat black rot on my grapes but I don't see directions for grapes.
Fung-onil Multi Purpose Fungicide Concentrate is not labeled for use on grapes, so we would not recommend this application. You could use Bonide Liquid Copper Fungicide on grapes as directed on the product label.
Answer last updated on: 07/05/2017