Have you ever tasted a pawpaw? Do you know what a pawpaw is? Come to Garden Dreams to sample local pawpaws as they ripen. Gabrielle Marsden will explain their anachronistic ways and discuss the beautiful zebra swallowtail butterfly. A miracle happened this year when a zebra swallowtail showed up in Greenfield and laid eggs for the first time (that we know of) in 87 years. Learn about how you can help re-establish a zebra swallowtail population in Pittsburgh.