Stephen Camburn points a Bur Oak tree that was planted by Allison residents on Arbor Day.
The group looks at a Striped Maple tree in the bicycle parking lot near the library.
Tim Spahn explains the differences between a pine tree and a spruce tree in the Deering Meadow.
The group walks by a pair of Musclewood trees behind University Hall.
Ann Ziegelmaier points out a Limber Pine tree to the group near the sorority quad.
Tim Spahn explains the difference between North Campus and South Campus soil. The difference in soil creates a difference in trees planted.
The tour began at the Rebecca Crown Center Clock Tower. Ann Ziegelmaier shows the group a Kentucky Coffee tree and talks about its unique characteristics.
Students and guests arrived to the Rebecca Crown Center Clock Tower to join in an event called NU Tree Walk Sunday morning. The annual event was hosted by Evanston Treekeepers, Facilities Management, Real Food at NU, Northwestern Eco-Reps, NU GREEN House and SEED. Facilities Management staff members, Ann Ziegelmaier, Stephen Camburn, Tim Spahn and Nigel Chesters guided the attendees around campus. The guides not only identified the various trees on campus but also talked about the history and stories of many of the trees. The tour began at the clock tower, went through University Library and ended at the Shakespeare Garden.