Walking downhill, the Butterfly Garden extends from the Passenger Pigeon Memorial to the World of the Insect on the left side of the path. This garden features many favorite plants of butterflies. Of particular note is the Dutchman’s Pipevine (Aristolochia tomentosa) that grows up into the pines at the back of the bed. This vine is the host to the Pipevine Swallowtail (Battus philenor) and sometimes you will see them up feeding on the perennials and annuals and then flying up into the vines to lay eggs. Somewhat hidden in this garden are two rare native plants, prickly ash (Xanthoxylem Americanum) and hoptree (Ptelea trifoliata), which host the Giant Swallowtail (Papilio cresphontes).