Pest Activity -- May 11 , 2007

Pest Activity > May 11

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 May 9, the following growing degree days with a base temperature of 50 degrees have accumulated.

Uniontown	332
Pittsburgh	324
Wexford	276
Butler	266

Pest Activity

Birch Leafminer

	Oviposition damage from Birch leafminers adults was noticed on European Birch in Sewickley this past week.
Fact Sheet

Boxwood Psyllid

	Boxwood psyllid remains in the nymph stage and continues to feed inside the cupped leaves of Boxwood in Pittsburgh this week. You may want to consider using one of the neonicotinoid insecticides in October or November of 2007 to prevent the cupping in 2008. The images to the left starting at the top are unifested foliage, cupped foliage due to psyllid feeding and psyllid nymphs.
Fact Sheet

Eastern Tent Caterpillar

	Eastern Tent Caterpillar larvae are 1" to 1-1/4" longs and tents are 10-12" wide at this time.
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

Honeylocust Plant Bug

	Honeylocust plant bugs continue to feed on honeylocusts in the City of Pittsburgh.
Fact Sheet

Pine Needle Scale

	The eggs of Pine Needle Scale have not hatched yet in the City of Pittsburgh, but should do so in the next week based on growing degree day accumulations.
Fact Sheet

Spruce Spider Mites

	Spruce Spider Mite adults are actively feeding at this time.
Fact Sheet

OTHER PESTS	.
	Hawthorn Leafminer Oviposition damage from Hawthorn leafminers adults was noticed on Cretaegus crusgalli in Pittsburgh this past week
	Elongate Hemlock Scale Crawlers were observed in the City of Pittsburgh this past week. Please click on the link below to view currently registered materials for control of this pest in Pennsylvania. Controls for Elongate Hemlock Scale

 

The next scouting report will be on May 18 , 2007 .