Come join Casey Trees as we survey the trees around the Washington Monument in honor of Arbor Day! It’s been over a decade since these iconic trees have been inventoried and we need your help. Want to put your tree skills to the test? Participants will receive a short, hands-on training on the mall. After learning the tools and techniques participants will split up into groups and begin measuring trees. We will be documenting tree species, height, diameter of the trunk, width of the crown and more.