Hi :
I have the Phylloxera galls on my pignut hickory and the leaves are dropping like mad, so I am not sure how the aphids come out in July if the gall itself causes the tree to loose leaves where the gall grows now. (May 30th-June7th). If I can prevent the aphids from springing free, I would have the tree sprayed before they hatch.
Please let me know your thoughts
Margaret
