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Program Staff

Tim-and-Raspberries Dr. Timothy Miller has been working as an extension weed scientist for Washington State University since 1997.  Tim earned his Ph.D. in plant science from the University of Idaho in 1995, and also holds a Master of Science (1987) and a Bachelor of Science in range management (1981).  His weed science program at WSU Mount Vernon includes weed control research in western Washington crops, as well as studying control of non-native vegetation on agricultural, range, and forest lands.  He has developed and presented hundreds of classes in weed identification and control at various programs in the Pacific Northwest since 1986.


carl.LCarl Libbey, Agricultural Research Technologist II, began working at the “Experiment Station” the summer of 1980. He received his B.S. degree in Horticulture from Washington State University in 1983. He has been with the Weed Science program for the past 15 years. Carl is responsible for carrying out all aspects of field research, including plot layout preparatons, statistical analysis, greenhouse studies, and weed identification.


sherryYushan (Sherry) Duan is from a small city in northeastern China. Sherry earned her Bachelor of Science in Turfgrass management from Northeast Agricultural University in Harbin and Michigan State University. She also holds a Master of Science degree from Washington State University in which she studied the effects of primocane management on red raspberry with Dr. Tim Miller. She is continuing as a PhD student with Dr. Miller and is currently researching the effects of plow-down crops on field production of tulip. Sherry’s hobbies include movies and computer games.

Weed Control Research Areas: