Do invasive insects threaten the Arnold Arboretum’s valuable tree species? Join Rachel Brinkman, Horticultural Apprentice, at the Arborway Gate of the Arnold Arboretum on Saturday, October 26 at 11:30 am on a tour to learn more about the Asian Long Horn Beetle (ALB), Emerald Ash Borer (EAB), Hemlock Wooly Adelgid (below), and other pests. Learn about susceptible tree species and how to identify these insects before they infest trees. Neither EAB nor ALB have been found in the Arboretum, but close monitoring is critical. Bring binoculars if you have them; a limited number will be available to borrow.Â In case of inclement weather, contact 617.384.5209. This activity is free, but you may register at www.my.arboretum.harvard.edu.