DOVER, Del. — Delaware celebrated Arbor Day in Dover, an annual occasion to highlight the many benefits of trees and encourage communities to plant more of them. The Delaware Forest Service hosted its annual Arbor Day Ceremony at Dover’s Schutte Park, honoring its school poster contest winners and recognizing Dover’s 30th Year as the First State’s longest-running Tree City USA. The event culminated with the planting of more than 30 large trees at six locations, including a zelkova on the historic Green on State Street. Delaware State University also held its Arbor Day event and celebrated its 8th consecutive year as Delaware’s only certified Tree Campus USA, followed by a ceremonial tree planting on campus.