Pieris katsura leaf problem
The beautiful leaves of this pieris, which I am about to plant, suddenly have a light tan color to the upper side of the leaf and tiny black, shiny, inky-looking spots on the underside. This all happened very rapidly. Can you tell me what is going on?
Certified GKH Gardening Expert
This would appear to be Aphids.
Treat the plant with Neem Oil.