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Pest Activity -- May 18 , 2007Pest Activity > May 18 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 16, the following growing degree days with a base temperature of 50 degrees have accumulated.
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Mines resulting from the feeding of Birch leafminers larvae were noticed on European Birch in Sewickley this past week. |
Boxwood Psyllid
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Boxwood adults were spotted 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. |
Eastern Tent Caterpillar
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Eastern Tent Caterpillar larvae are 1-1/4" to 1-1/2" long at this time. |
Euonymus Scale
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Eounymus scale crawlers were observed in the City of Pittsburgh this past week. |
Hemlock Rust Mite
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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. |
Honeylocust Plant Bug
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Honeylocust plant bug adults and nymphs are present at this time on honeylocusts in the City of Pittsburgh. |
Pine Needle Scale
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The crawlers of Pine Needle Scale observed at two sites in the City of Pittsburgh have not started to migrate yet. For some reason, they are not paying attention to the number of growing degree days or their activity from past years. Crawler migration should occur any day now. |
Spruce Spider Mites
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Spruce Spider Mite adults are actively feeding at this time. |
The next scouting report will be on May 25 , 2007 .
