Fall Webworm Outbreaks
Cliff Sadof, Department of Entomology, Purdue University

What is webbing and defoliating the shade trees?

Fall webworm caterpillars have been covering shade trees with webs throughout much of Indiana. These caterpillars are fuzzy, with black dots on their backs and can extend to about 1 1/2" by the time they complete their development.

When unchecked, webs can cover an entire tree, and the caterpillars can consume all leaves in the process. To make matters worse, while these caterpillars defoliate trees, they have a nasty habit of dropping massive amounts of black fecal pellets. Fortunately, most trees can survive a single defoliation. Controls are readily available for home and woodlot owners. Effective use of these controls requires a good understanding of the biology of this pest.

Full Story, http://www.ces.purdue.edu/gardentips/insects/webworms.html

When Tree Roots Surface
B. Rosie Lerner, Extension Consumer Horticulturist, Purdue University

Much to the dismay of homeowners, landscape trees sometimes grow roots on top of the surface of the lawn or possibly even buckle sidewalks and driveways. These surface roots can be quite a nuisance to lawn mowers and running feet. Read the full story for reasons why roots come to the surface.

Full Story, http://www.hort.purdue.edu/ext/treeroots.html

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