Authors: Mark Wilhelm, Matthew Borden, Dr. Adam Dale
Faculty Mentor: Dr. Adam Dale
College: College of Agricultural and Life Sciences
Hollies, such as the native Ilex vomitoria (yaupon holly) and I. opaca (American holly), and the non-native I. cornuta “Dwarf Burford”, are common ornamental plants in the southeastern U.S. Several groups of insect pests affect these plants, including the psyllid Gyropsylla ilecis, the aphid Toxoptera aurantii, leafminer flies (Agromyzidae), and multiple scale species (Diaspididae and Coccidae). A literature review was conducted on several common holly pests, particularly the poorly known yaupon psyllid, Gyropsylla ilecis. Additionally, an experiment examined the relative susceptibility of the three previously mentioned holly species to the tea scale, Fiorinia theae. Both previous literature and the new study suggest that I. vomitoria incurs negligible damage from most common holly pests. This, combined with the plant’s native status, drought tolerance, and marketability as a beverage, make it an excellent candidate for replacing the common I. cornuta “Dwarf Burford” in landscapes.