Michigan State University Extension
Ornamental Plants plus Version 3.0 - 00001464
11/12/99
TILIA DISEASE PROBLEMS
Anthracnose caused by Gnomonia tiliae causes elongated
light brown areas next to the veins. The spots may be
anywhere on the leaf but are most often near the tip. The
spots are bordered by a distinct black band. Severe
infections defoliate the tree. The disease does not
require chemical controls every year but repeated severe
infections may justify spraying.
Leaf blight causes leaves to brown and fall. The early
symptoms are round, brown spots with dark borders. The
spots become numerous leading to leaf browning and drop.
Several fungi cause cankers and dieback on branches and
trunks. Remove infected branches as they occur and avoid
wounding the tree. Fertilizing infected trees may help.
Powdery mildew forms a white coating on the leaves but is
usually not serious.
Verticillium wilt causes dieback and death of individual
branches or the entire tree. Keep trees healthy to
prevent the disease.
Related information.
Pesticide Recommendations
Anthracnose
Fungal and Bacterial Leaf Diseases
Cankers
Verticillium Wilt
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mentioned. This information becomes public property upon
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This file was generated from data base ZZ on 01/19/00.
Data base ZZ was last revised on 11/12/99.
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