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Elm Yellows

Penn State continues efforts to control spread of elm yellows disease

Monday, November 23, 2009

Elm yellows, a disease affecting Penn State's landmark American elm trees on the University Park campus and previously thought to have the ability to decimate the majestic trees, may be isolated. (more)

Still Life: Elm tree removed near Deike Building

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)

Web site, videos discuss significance of Penn State elm trees, disease

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)

Still Life: Elm yellows press conference, Nov. 6, 2008

Thursday, November 06, 2008

On Nov. 6, 2008, Penn State held a press conference to announce the results of extensive testing on the University Park campus' American elm tree population for elm yellows disease. See a Still Life of photos at http://live.psu.edu/stilllife/1872 online. (more)

Tests show elm yellows disease still threatens campus trees

Thursday, November 06, 2008

The American elm trees on Penn State's University Park campus face a battle for their lives. Recent tests have detected elm yellows disease, a deadly bacteria-like infection for which there is no known cure, in 47 of the campus' approximately 290 elms, according to Bill Mahon, vice president of University relations. University experts first identified elm yellows in a handful of campus elms last fall. "Test results show that elm yellows is progressing a bit more slowly than we had initially feared, but the situation is still serious." Mahon said. "There is no known way to absolutely halt the spread of the disease from tree to tree, or to cure trees that have become infected." A Web site celebrating the tradition, beauty and history of the elms offers photos, videos and other information at http://elmyellows.psu.edu online. (more)

Penn State prepares for 'elm yellows' disease

Monday, November 12, 2007

While Dutch elm disease has posed the major ongoing threat to elms in the Centre Region over the last half-century, another disease, elm yellows, is moving into Centre County, bringing with it the potential for a major impact on American elms at Penn State's University Park campus and the surrounding area. Long known for its majestic elms, the University Park campus is home to one of the most mature remaining elm stands in the country. The elms are considered a landmark on the campus and the University has long maintained a commitment to preserving the elm trees through a nationally recognized elm management and preservation program. (more)