Michigan State University Extension
Ornamental Plants plus Version 3.0 - 00000941
11/12/99
MALUS INSECT PROBLEMS
Aphids infest branch tips causing them to be distorted.
Fall webworm makes nests on the branches and feeds inside
the nest. Small nests can be pruned out.
Scales of various types are controlled with dormant oil
applied in spring. Crawlers are controlled with properly
labeled pesticides when crawlers are present. Scale
identification allows proper timing of sprays.
Mites are too small to see easily so can cause much
foliage discoloration before being detected.
Tent caterpillar (Vis. 1) builds tents or nests in trees in
early summer or late spring. Feeding occurs outside the
nest. Small nests are pruned out. Do not burn nests while
they are still in the tree.
Related information.
Pesticide Recommendations
Aphids on Ornamentals
Spider Mites
Fall Webworm
Eastern Tent Caterpillar
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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
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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.
For more information about this data base or its contents please contact
heatley@msue.msu.edu . Please read our
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