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Pest Activity -- May 4 , 2007Pest Activity > May 4 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 2, the following growing degree days with a base temperature of 50 degrees have accumulated.
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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. |
European Sawfly
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The larval stage of this pest is currently feeding on Mugo and Austrian pines at this time. |
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 Bugs have hatched and have begun feeding on honeylocusts in the City of Pittsburgh. |
Spruce Spider Mites
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The majority of eggs have hatched in the City of Pittsburgh and the nymphs are actively feeding at this time. |
White Vine Weevil
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The adult females have started laying eggs in Pittsburgh. It is too late to apply insecticides for this year. Physical removal of infected leaders is the only control method left for this season, and should be undertaken in late May or early June when the leaders become discolored and begin to droop
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| OTHER PESTS | Hawthorn Leafminer |
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Hemlock Wooly Adelgid Thanks to Steve Miller of Bartlett Tree for sharing this information. |
The next scouting report will be on May 11 , 2007 .
