Walk the Arnold Arboretum landscape with Michael Dosmann, Curator of Living Collections, to learn about shrubs, both common and lesser-known species. On Wednesday, July 10, beginning at 6:30 pm in the Hunnewell Building of the Arnold Arboretum, Michael will focus on those that display outstanding characteristics in summer. You’ll learn cultural requirements and see full-size specimens so you can determine which shrubs might suit your needs. There will be an additional session in September. See www.my.arboretum.harvard.edu for full information, and registration. Fee $20 Arboretum member, $27 nonmember. Below is a buttonbush, which blooms in June and July.