John M. Ruter

Dr. John M. Ruter is the Allan M. Armitage Professor and Director of the UGA Trial Gardens within the College of Agricultural & Environmental Sciences at the University of Georgia. His work integrates plant breeding, genetics, and sustainable nursery crop production, focusing on ornamental plants for southeastern landscapes.

• Education:
  • B.S. in Ornamental Horticulture, California Polytechnic State University (1984)
  • M.S. in Ornamental Horticulture and Landscape Design, University of Tennessee (1986)
  • Ph.D. in Horticultural Science, University of Florida (1989)

Research interests include developing climate-resilient ornamental plants (e.g., Camellia oleifera, hibiscus, crape myrtle), mutation breeding via gamma irradiation, and optimizing nursery production systems. Recent projects focus on polyploid conifer evaluation and tea oil crop development for the southeastern U.S.

Recent publications highlight advancements in induced mutagenesis (EMS, gamma irradiation), disease resistance screening (Cercospora leaf spot), and genetic characterization of native and ornamental species. Key subfields include ornamental breeding, genomic analysis, and sustainable production practices.

As Director of the UGA Trial Gardens, he leads plant evaluation programs that inform regional landscaping decisions and cultivar development.