Michigan State University Extension
Ornamental Plants plus Version 3.0 - 00001238
11/12/99
RHODODENDRON INSECT PROBLEMS
Black vine weevil and strawberry weevil adults (Vis. 1) feed
at night, notching the leaf margins and making holes in the
leaves. The larvae (Vis. 2) feed on the roots and bark,
girdling and killing the plant.
Lace bugs (Vis. 3) cause leaf yellowing. Brown specks on
the undersides of leaves are insect excrement. Sunny sites
may lead to higher lace bug populations.
Mites cause leaf discoloration.
Scales may be found on branches and stems of
unhealthy-looking plants. The preferred method of control
involves regular inspection for early detection of the
infestation then spraying with dormant oil.
Related information.
Pesticide Recommendations
Black Vine Weevil
Lace Bugs
Spider Mites
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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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