Grapes Drying on the Vine
I have some Frontenac grape vines on an arbor in my garden, and some of the grapes look good, while others are turning brown and drying up. Do you know what may be causing this problem? I attached photos of the grapes and also leaves. Thanks!
It could be too much water.
or it would be spotted wing drosophila.
It could also be black rot, and it is a fungal disease.