Woody Ornamental Integrated Pest Management at Penn State
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Pest Activity -- April 27 , 2007

Pest Activity > April 27

Welcome to the Woody Ornamental Pest Scouting Report for Western Pennsylvania brought to you by Penn State Cooperative Extension. This report is updated weekly with growing degree day counts and insect activity through the end of June. If you would like an email copy of this report, send your request to mcm2@psu.edu.

As of April 25, the following growing degree days with a base temperature of 50 degrees have accumulated.

Uniontown
196
Pittsburgh
190
Wexford
165
Butler
160










Pest Activity

Boxwood Psyllid

Young nymphs of the Boxwood psyllid continue to feed inside the cupped leaves of Boxwood in Pittsburgh this week.

Fact Sheet

Eastern Tent Caterpillar

In my travels I have not seen many tents this spring. The lone eastern tent caterpillar on a cherry tree on my property is 3/8 inch long and the tent is 3 inches long.

Fact Sheet

Hemlock Rust Mite

Hemlock Rust Mite remain active in SW Pennsylvania at this time. This is the time to apply controls.

Click here for current list of miticides labeled for use in Pennsylvania.

Fact Sheet

Spruce Spider Mites

A few more nymphs were observed on Wednesday, but the majority of eggs have not hatched yet in the City of Pittsburgh, but this should change with the seasonal temperatures predicted for this week.

Fact Sheet

White Vine Weevil

The adult females have started laying eggs in Pittsburgh. NOW is the time to apply insecticidal sprays to the tops of white pines for control of this pest.

Click here for current list of insecticides labeled for use in Pennsylvania.

Fact Sheet

OTHER PESTS

Imported Willow Leaf Beetle

The first adults were observed in Sewickley this week. This is usually a minor pest does not frequently require control measures.

Hemlock Wooly Adelgid

The shot on the left was taken in the Shadyside area of Pittsburgh this week. If there are any hemlocks on the property you are maintaining, please check them for this pest. In Allegheny County, we have confirmed cases in Fox Chapel and the Shadyside area of Pittsburgh.

Thanks to Steve Miller of Bartlett Tree for sharing this information.

Controls for Hemlock Wooly Adelgid

 

The next scouting report will be on May 4 , 2007 .
 

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