Pest Activity -- April 29

Pest Activity > April 29

Welcome to the Woody Ornamental Pest Scouting Report for Western Pennsylvania brought to you by Penn State Cooperative Extension. This message will be 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 month date, the following growing degree days with a base temperature of 50 degrees have accumulated.

Uniontown	218	Mercer	187
New Stanton	166	Franklin	143
Pittsburgh	185	Meadville	121
Wexford	***	Erie	98
Butler	152	Harbor Creek	77

Pest Activity

Birch Leafminer

	In some parts of SW Pennsylvania the adults have laid eggs in birch leaves, while in other pats, the adult females are laying eggs at this time.
Fact Sheet

Boxwood Psyllid

Boxwood psyllid nymphs remain active in Pittsburgh this week A soil drench of imidacloprid at this time can likely eliminate the prospect of having leafminer damage for the next season by killing the next generation of leafmining larvae as they hatch in another 3-4 weeks. Be sure to pull back any mulch around the bases of the boxwoods to be treated since pouring the imidacloprid mix onto the mulch will result in the pesticide being bound to the mulch and not taken up by the roots.

Fact Sheet

Eastern Tent Caterpillar

	The tents are 4-6" across and the larvae are 3/8" long at this time.
Fact Sheet

Hemlock Rust Mite

	Hemlock rust mites remain active at this time.
Fact Sheet

Honeylocust Plant Bug

	Young honeylocust plant bug nymphs have hatched and and have started to feed on honeylocust in the city of Pittsburgh.
Fact Sheet

Spruce Spider Mites

	Spruce spider mites are active in Pittsburgh at this time.
Fact Sheet

The next scouting report will be on May 6 .