Imagine traveling back in time 100, 200, even 2,000 years! What did this landscape look like? Would the same kinds of trees growing in the Arboretum now have grown here then? Take a walk back in time at the Arnold Arboretum on Sunday, August 15 with docent David Tarbet to explore trees and their uses. This tour, from 1 – 2:30 pm,Â expands on the Walk with Natives self-guided tour, available in Silva and in the Visitor Center.Â Free, no registration required.Â For more information log on to www.arboretum.harvard.edu.