I have a grapevine, which does not have any grapes on it. Last year it had sooty mold, I think, and I sprayed it and have since sprayed it. What causes no fruit to be on a grape plant?
Certified GKH Gardening Expert
Grapevines fruit on new growth. It is possible that the sooty mold killed off new growth on the vine and this is what caused the loss of fruiting. If nothing interferes with the new growth, it should start fruiting the following year.