ASH TREE REMOVAL IN HUTCHINSON COURTYARD

The re-paver project currently under way in Hutchinson Courtyard has prompted some concern regarding the large number of ash trees planted there. The tree located in the northeastern corner has begun leaning significantly to the east, and there is increased concern over a possible infestation by the Emerald Ash Borer. Infestations by this insect have been steadily increasing in the Chicago Metropolitan area since 2006, and the locations of recent outbreaks are nearing the University’s campus. Once an ash tree becomes infected with the insect, the tree must be removed. There is no cure, and the beetle larva destroys the inner layers of the tree.

Consultations with Scott Jamison, an arborist who has been working to maintain the trees on our campus for over 20 years, John Kirchner, City of Chicago Forester, and Adam Schwerner, Director of Natural Resources at the Chicago Park District have prompted a plan to remove five of the nine ash trees in Hutchinson Courtyard concurrent with the re-paving work under way this summer. This plan would greatly reduce the amount of disruption that would be caused by substantial tree removal at a later time. Once the new pavers are installed, the removal of large trees and the installation of new trees would need to be very carefully orchestrated to protect the new walkways and ensure the safety of pedestrians. The ash trees will be replaced by a symmetrical planting of new oaks, a tree known for its long life that is in keeping with the beautiful canopy on the University’s quadrangles. Five existing trees (three ash, and two elms) will remain to provide tree canopy as the oaks mature. Should the remaining ash trees succumb to the Emerald Ash Borer and the elms to Dutch Elm Disease in upcoming years, the oaks will have been in place long enough to provide a new tree canopy.

The decision to remove any of the University’s trees is not taken lightly. We hope that using this opportunity to replace the ash trees that have such a risky future with strong and long lasting oaks will ensure Hutchinson Courtyard remains a shady retreat for students, faculty, staff and visitors for decades to come.

For information about the re-paving projects, see Main Quadrangle Paver Projects.

For an annotated map of the Main Quadrangle Paver Project, including alternate building entrances and pedestrian re-routing, see Main Quadrangle Paver Project Logistics Plan [PDF].