Sycamore anthracnose is a widely distributed disease of sycamore and plane trees.
Susceptible sycamore plants include American, Arizona and California varieties. The
disease progresses in three phases: Canker formation, twig blight, and leaf blight,
respectively. The fungus enters through the petioles and begins colonization when
the trees become dormant in the fall and winter. The establishment of Apiognomonia in the cambium tissues leads to canker formation, twig dieback, and may kill infected
Dieback of sycamore branch and necrotic lesions near the veins are typical symptoms.
Fallen branches and leaves should be removed to lessen the severity of disease. Please
contact your local county extension office for current information.