This week, we return with our series on the common tree diseases and insect pests in Illinois with a discussion of a fungal diseases that can affect many different trees and shrubs; anthracnose.  Anthracnose is a term used to describe a variety of similar fungal diseases that cause lesions to appear on the leaves, branches, and fruit of affected trees.  These lesions typically appear as wet, dark spots on leaves and twigs and they can cause...