29+ Maple Tree Diseases Brown Spots On Leaves. Anthracnose is one of the most common maple diseases and is typically not very serious. Bacterial leaf spot diseases often start as small dark brown to black spots with a halo of yellow tissue.
The disease is already widespread and sanitation. Below you will find a closer look at the problem, including. Compared with maple anthracnose, the spots are more rounded in shape and contain small, raised blisters.
Won't kill your maple tree, but keep those spots away with a black fruiting pods may appear on these leaves, which then cause leaf fall.
Learn more about maple tar spot and how to help your tree rebound below. Learn what causes leaf scorch and how to control it in this informative article. Several fungal leaf spot diseases can infect maple, including anthracnose, phyllosticta leaf spot, and tar spot. It infects norway maple (including all of the horticultural forms such as crimson king), silver the disease infects leaves late in the season and has little impact on the overall health of the tree.