Anthracnose is a group of fungal diseases that affects several varieties of shade trees, and is the result from an infection by various fungi. Typically, this type of disease will appear in moist or wet conditions, which is when it spreads the easiest. It will not spread under dry conditions. The symptoms vary with the host and affect new or young growth, sometimes causing brown patches, curling, or leaf distortion. Proper tree care measures can help prevent this condition.
Dogwood Anthracnose - Expert Tree and Shrub Tips