The research in my lab is focused on breeding, genetics, genomics, and physiology of shrub willow bioenergy crops. Shrub willow (Salix spp.) produce high yields of woody biomass when grown as a dedicated short-rotation crop on marginal or underutilized land. Willow stems are harvested every three years and the plants resprout after each cutback, making willow fields productive for more than 20 years. I direct the largest willow breeding program in North America and collaborate with colleagues across North America on studies of willow biomass composition, willow crop management, and regional yield trials.