Michigan State University Extension
Ornamental Plants plus Version 3.0 - 00001529
11/12/99
VIBURNUM INSECT PROBLEMS
Viburnum aphid is gray to dark green and feeds in clusters
at the tips of the branches, causing leaf curl. Viburnum
opulus is especially susceptible. The insects can also be
dislodged with high pressure water spray from the garden
hose.
Tarnished plant bug causes brown spots on the flowers and
young shoots. The spots have light centers with dark
margins.
Treehoppers lay eggs under the bark, then cover them with
a white, sticky substance. The white coating is the
symptom first noticed. No chemical control is suggested
for this relatively minor problem.
Inspect the stems of unhealthy-looking plants for possible
scale infestations. If found, spray in early spring with
dormant oil. Identify the scale so crawler sprays are
properly timed. The preferred method of control involves
regular inspection for early detection of the infestation
then spraying with dormant oil.
Related information.
Pesticide Recommendations
Aphids on Ornamental
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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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