Pest Activity -- March 24, 2004
Pest Activity
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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 March 24,
the following growing degree days with a base temperature of 50 degrees
have accumulated.
| Uniontown |
36 |
Mercer |
12
|
| New Stanton |
32 |
Franklin |
12
|
| Pittsburgh |
29 |
Meadville |
12
|
| Wexford |
22 |
Erie |
8 |
| Butler |
10 |
Harbor Creek |
10
|
Pest Activity
Cooley Spruce Gall
 |
Overwintering Cooley Spruce Gall Adelgids found this past week on Douglas-fir in Westmoreland County were beginning to form the white waxy strands they form before molting. While the adelgids should be susceptible to pesticides, please wait until the air temperatures are greater than 50 degrees Fahrenheit. |
Fact
Sheet
|
Hemlock Rust Mite
 |
Hemlock Rust Mites have started to hatched and adults are becoming active in Westmoreland County at this time. |
Fact
Sheet
|
Other Pests
 |
Now is the time to check
for winter damage from voles feeding on woody landscape plants.
They can be especially destructive to groundcover plants like
junipers as shown to the left. Penn State University has an
excellent publication on voles and a pdf version is available
here.
The University of Maryland also has an excellent publication
found here.
|
|
The next scouting report will be on Friday, April 2, 2004 .
