Thursday, May 10, 2012
Please be advised that elm tree spraying will commence tonight (May 10) at 9 p.m. and will conclude tomorrow morning (May 10) at 7 a.m. Spraying will be conducted from the ground and by helicopter, weather permitting. (more)
Friday, April 13, 2012
The disease known as Elm yellows threatens the health of over 200 majestic American elms on the Penn State campus. Elm yellows is just one of many tree diseases that contribute to the decline and death of trees in the United States. What are the main causes of American tree diseases and have we made progress in preventing and treating them? (more)
Tuesday, July 06, 2010
Determining how to save Penn State's elm trees is an ongoing collaboration between University researchers and groundskeepers. Capturing disease-carrying insects to study them has been an elusive task, but researchers believe existing efforts to prevent Dutch elm disease may be a clue to keeping the landmark trees safe from elm yellows. (more)
Monday, July 20, 2009
Elm tree spraying, being conducted from the ground and by helicopter, will wrap up this morning (Monday, July 20) after it began Sunday evening. OPP thanks the campus community for understanding the need for and cooperating with this important program as work continues to preserve the campus' elm trees. Please direct questions and concerns to Paul Ruskin at (814) 863-9620. (more)
Friday, November 21, 2008
A tree crew from Penn State's Office of Physical Plant removed an American elm tree at the south end of Deike Building on the University Park campus in November 2008. The tree was infected with elm yellows, a bacteria-like disease for which there is no known cure or control. See a Still Life of photos at http://live.psu.edu/stilllife/1886 online. (more)
Friday, November 07, 2008
Penn State's landmark elm trees are in danger of disappearing. Elm yellows disease, a deadly bacteria-like infection for which there is no known cure, already has infected more than 15 percent of the approximately 290 trees at University Park. A Web site celebrating the tradition, beauty and history of the elms offers photos, videos and other information at http://elmyellows.psu.edu. Visitors to the site are invited and encouraged to post comments, such as reactions to the site's content and memories about the landmark trees. (more)