Michigan State University Extension
Ornamental Plants plus Version 2.0 - 00000448
01/01/98
COTONEASTER INSECT PROBLEMS
Hawthorn lace bug causes a gray, lacy spotting of the
upper leaf surfaces. Brown specks on the lower leaf
surfaces are insect excrement.
Several scale insects attack cotoneaster, including
oystershell and San Jose scale. The insects can build up
to large numbers without being seen. A combination of
regular inspection for early detection then a dormant
spray is the preferred method of control.
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This file was generated from data base OP on 07/27/98.
Data base OP was last revised on 01/01/98.
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heatley@msue.msu.edu . Please read our
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