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This fungus is very common among flowering dogwoods, and several other trees. Initially it causes a dieback of new foliage, and works its way into the twig causing new twigs to die off. This can lead to a witches broom effect, a stunted appearance of the infected tree. Over time, the tree becomes weakened and vulnerable to secondary attackers such as dogwood borers.

Preventative foliar treatments, along with maintaining tree health, are the keys for managing this disease.

Similar to dogwood anthracnose, sycamore anthracnose will cause leaves to become necrotic and will often fall from the tree in midsummer. While rarely fatal for the tree, it can reduce the tree’s health and vigor, leaving it susceptible to other pests. This disease can also be found on maple, ash, and oak.

Systemic treatments are another option for this disease, and can greatly improve the appearance and longevity of the infected tree.