A client dropped the Hickory tree leaves with gall on it. Please help me to identify the problem with solutions.
Nav Ag Agent Green LAke COunty
It is one of the many Phylloxera galls- it is cosmetic and does not harm the tree. We normally do not suggest control- could use a systemic in the fall- Imidacloprid- but it is expensive and the galls often do not reappear the nest year in numbers