The City of Hoboken and the Hoboken Shade Tree Commission invite residents to the Hoboken Tree Tour in celebration of Arbor Day. On Friday, April 29, residents can take a 3-hour Hop bus tour with urban forester and ecologist Mary Charlotte Gitlin, to learn about tree species, the importance of tree diversity, tree lifecycles, and more. The tour begins at 9 a.m. at the Multi-Service Center at 124 Grand Street, Hoboken.