Michigan State University Extension
Ornamental Plants plus Version 3.0 - 00001394
11/12/99
SPIREA INSECT PROBLEMS
Spirea aphid causes leaf curling and is usually found
on the shoot tips or in flower clusters. Heavy
infestations reduce the amount of growth produced by the
plant. The insects can be dislodged with high pressure
water spray from the garden hose.
Oblique-banded leaf roller rolls and webs the leaves
together. Hand pick infested leaves.
Inspect the stems of unhealthy-looking shrubs for scales.
Use sprays of dormant oil in the spring to minimize injury
to predators that help control scales. Identify the scale
to properly time crawler sprays. 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 Ornamentals
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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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