What is wrong with my grapes
I sprayed my grape vine with garden fungicide but they are still going bad. This has been happening for a few years now.
Certified GKH Gardening Expert
This looks like Grape Black Rot. This can be quite difficult to control. This will have to be controlled by a fungicide that is specifically made for this application.
This article will give you more information on this subject, and how to control it: https://www.gardeningknowhow.com/edible/fruits/grapes/black-rot-grape-treatment.htm