Michigan State University Extension
Ornamental Plants plus Version 3.0 - 00000880
11/12/99
LIRIODENDRON DISEASE PROBLEMS
Tuliptree is attacked by several cankers. Infected,
girdled branches dieback from the tip to the point of
infection. Keep trees healthy and prune out infected
branches.
Leaf spots are usually not serious enough to warrant
chemical controls. Once leaves are heavily infected the
opportunity for chemical control is lost. Rake up and
dispose of infected leaves.
Powdery mildew causes a white coating on the leaves. Late
in the season it may be ignored.
Sooty mold makes a black coating on leaves and stems. The
fungus grows on the honeydew left by insects. Control
sooty mold preventing the build up of insects populations.
Verticillium wilt causes wilting and death of leaves on
infected branches. Severe infections kill trees.
During hot, dry weather leaves turn yellow and fall off.
This conditions is due to the weather and is not a
disease. The problem is most common on newly transplanted
trees. Yellowing may be preceded small, angular, brown
spots on the leaves.
Related information.
Pesticide Recommendations
Cankers
Powdery Mildew
Verticillium Wilt
Fungal and Bacterial Leaf Diseases
This information is for educational purposes only. References
to commercial products or trade names does not imply
endorsement by MSU Extension or bias against those not
mentioned. This information becomes public property upon
publication and may be printed verbatim with credit to MSU
Extension. Reprinting cannot be used to endorse or advertise
a commercial product or company.
This file was generated from data base ZZ on 01/19/00.
Data base ZZ was last revised on 11/12/99.
For more information about this data base or its contents please contact
heatley@msue.msu.edu . Please read our
disclaimer for important
information about using our site.