The Garfield Park Conservatory celebrates its 100th birthday from noon to 3 PM this Sunday, April 13, with a live blues band, kids’ programs, special prizes, and free food–including hot dogs, popcorn, cake, and ice cream. There’ll also be storytelling and photo ops with staff dressed as horticulturalists from the early 1900s. The party includes a cake-cutting event at 2 PM and wraps up with a ceremonial tree planting at 3 PM.  Also that day: Treekeeper Jim DeHorn of Openlands will lead two 45-minute “Tree ID Walks” through Garfield Park, starting at 11:30 AM and 1 PM. And from 12:15 PM the conservatory will be giving away 100 dogwood tree saplings.