Rachel Leisso*, Montana State University Plant Sciences and Plant Pathology* Completed as fulfillment for Plant Pathology Revised:  8/13/2012 Item number:  XHT1142 What is butternut canker?  Butternut canker is a fungal disease of Juglans cinerea, the butternut tree (also known as white walnut or oilnut).  The disease is thought to have originated outside of the U.S.  … Continue reading Butternut Canker