Most of the American elm trees that grace the mall and the adjacent Old Queen’s campus date from the turn of the 20th century. At the time, Bleeker Place, a New Brunswick street, cut across the mall. These living antiques were planted on either side of the road and in a wide grassy median that separated the northbound and southbound lanes.
American elms were once common on streets and in parks. They grow quickly, have dense, shady foliage and tolerate compacted soil and less-than-perfect air quality. But while many American cities have an Elm Street, many of those streets lost their elms long ago to a virulent fungus called Dutch Elm Disease (DED). The disease, which decimated the American elm population beginning in the 1930s, was first identified in the Netherlands in 1921.
Dutch Elm is believed to have come to America from Europe in timber from diseased logs. It is spread by elm bark beetles that carry the fungus from diseased to healthy trees when they emerge to feed each spring. The fungus blocks the movement of water in the tree and can be spread through the roots of adjacent trees.
The vintage American elm specimens at Rutgers have been kept green and leafy by vigorous maintenance, a process that continues to this day and includes horticulturally correct methods of timed treatments to help fight the spread of disease. The university also has started a memorial tree program for all New Brunswick campuses. Whenever a memorial tree planting is requested, the donor is encouraged to plant a new elm tree that is resistant to DED. Rutgers’ intent is to replace the original elms that have died as a result of old age or the disease with heartier new elms.
There are 54 mature elms (and seven replacements) on and in the vicinity of the mall. Additional plantings of DED-resistant elms are planned with the overall intent to recreate the original design of 100 percent elms. All other tree species will be gradually removed.
Media Contact: Steve Manas
732-932-7084, ext. 612
E-mail: smanas@ur.rutgers.edu