Oak Leaf Blister

(Taphrina caerulescens) - Oak leaf blist presents itself with abnormal growth of leaves, including bulges, depressions, cupping and twisting. Numerous blisters can coalesce to affect entire leaf. Bulges are usually light green, eventually turning to brown as the leaf ages. Defoliation can occur on severely diseased trees. Often leaves remain on tree.

Think your tree has this problem? Click the link below to contact a professional forester or arborist