Join a Massachusetts Certified Arborist on Thursday, April 7 at 7 pm at Elm Bank, 900 Washington Street in Wellesley to discuss the basics of caring for our landscape trees and identifying threats to tree health. Adam Cervin is District Manager of Hartney Greymont, a Division of the Davey Tree Expert Company. Adam has cared for trees throughout New England for over 20 years and is passionate about nurturing woody plants of all kinds. $12 for Mass Hort members, $20 for nonmembers. Register on line at www.masshort.org, or call 617-933-4973.