I have a concord grape vine on an arbor in my backyard. I'm in
Massachusetts, about 15 miles from Concord so the climate should be ideal
for Concord grapes. For the last couple of years my grapes have shriveled
up before ripening. I suspect a fungus but I really don't know for sure.
Is there anything I can do to help the situation? Are there any fungicides
that I should try?