Hi, I'm new to this forum. I have been tending my in-law's grape vine the past 3 years. We get many grapes each year, but around June, we have heavy rains that lead to black rot and the death of all grapes. I've tried pruning the vine way back to improve air flow but each year, the result is the same. Is the best bet to give up on the vine? Many mosquitoes invade their yard after the rain and hide amongst the vines. I appreciate any suggestions.