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Cottonwood
Leaf Beetle
Cottonwood
Leaf Beetle - Affecting Cottonwood trees.
 
Cottonwood leaf beetle larvae on a cottonwood twig. The
right photo shows pupae of the cottonwood leaf beetle and the
leaf damage they caused.
Photos: Cheyenne Urban
Forestry
Adult cottonwood leaf beetle
Photo: University
of Arkansas
This beetle is not presently a serious problem in Cheyenne. Although
several years of mild winters and drought conditions have contributed
to the increase in the local population of the beetle species.
Infestations can be sprayed with insecticides containing
carbaryl, or a pyrethroid based insecticide. Another Website
with good information on the cottonwood leaf beetle is:
University of Minnesota
Links:
Colorado
State University Cooperative Extension
University
of Wyoming - Cooperative Extension Service,
publication B-1035 is particularly helpful for tree care.
This online publication contains information on: Aphids, Borers,
Cottonwood blotch leaf miners, Cytospora canker, Fireblight, Gall
makers, Aspen leaf spots, Oystershell scale, Pear slugs, Powdery
mildew, and Spider mites.
Questions?
E-Mail
Forestry Division
If
possible, take a couple of digital photos of your tree or shrub
and include them with your questions. One photo should be a close
up of the problem area. The second photo should be of the entire
tree if possible.
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