Dr. Metcalfe had a wife named Susan and wild plum grew on the property. The borough was originally named for the presence of wild plum trees. It may also survive on wild plum, hawthorn, and crabapple. Willow, cottonwood, choke cherry, wild plum, and wild roses are found in the riparian areas. The first true greengage came from a green-fruited wild plum () originated in Iran (Persia). Wild Plum Campground is a little more than a mile away on Haypress Creek. In Panama, one of the green iguana's favorite foods is the wild plum ("Spondias mombin").