Almost looks like verticillium wilt. Its caused by a fungus from cool and wet conditions. My hops stayed healthy but my grapes, tomatoes, and cucumbers all got the wilt.
The only thing I have is an Irish stout on nitro right now. Just to let you know I'll have blue berries by the middle of July if any one wants to make something with them. Also by the end of September I should have a lot of apples and pears.