With an evening lecture and a daytime walk through the Arnold Arboretum to look at examples, John DelRosso will present current methods of identifying, monitoring, and managing various types of insect pests, plant diseases, and stresses to woody plants. The group will tour the Arboretum in search of over twenty different examples of the more common problems associated with landscape plant material. Students are encouraged to bring pest and disease samples (bagged) for identification. Bring a hand lens if you have one and wear comfortable walking shoes for the Saturday walk. Dates: Wednesday, June 11, 6 – 9, and Saturday, June 14, 9 – noon. Fee $60 Arboretum member, $80 nonmember. Register online at https://my.arboretum.harvard.edu/Info.aspx?EventID=1.