The celebration of trees is scheduled from 10 am to 12 noon and is free to the public. Tree climbing for children will be the highlight of the morning. Children will put on a harness and helmet and be guided by Iowa Arborist Association members as they climb a tree. Demonstrations and other activities are planned for the morning. There will be a special appearance by Smokey the Bear. Join us for a fun and educational morning at the Arboretum.