Michigan State University Extension
Ornamental Plants plus Version 3.0 - 00000674
11/12/99
GLEDITSIA INSECT PROBLEMS
Boring insects may be prevented by keeping trees healthy
with regular fertilization.
The combination of plant bug and leafhopper feeding causes
the leaves to drop (Vis. 2). Plant bugs may be more common
on the yellow leaved cultivar 'Sunburst' than on green
leaved types. Both insects are green so will be hard to
detect.
Pod gall midge (Vis. 1) causes unusual reddish galls at the
tips of the branches. The galls appear in late spring and
may be most common on thornless, seedless cultivars.
Spider mites cause an autumn-like yellowing of the leaves.
Diagnosis of this problem is difficult due to the small
size of the insect and leaflets.
Scales can usually be controlled by dormant sprays applied
in spring. Crawlers are controlled with properly timed
sprays of properly labeled pesticides. Scale
identification aids in proper spray timing.
Related information.
Pesticide Recommendations
Plant Bug and Leafhopper
Spider Mites
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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
Extension. Reprinting cannot be used to endorse or advertise
a commercial product or company.
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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