Butternut canker is killing trees throughout the range of butternut in North America and is threatening the viability of many populations in several areas. Although butternut is the primary host, other Juglans species and some hardwood species also are potential hosts. Evidence is building that genetic resistance within butternut populations may be exploited for conservation and restoration of the species.


Ostry, M. E. and K. Woeste. 2004 Spread of butternut canker in North America, host range, evidence of resistance within butternut populations and conservation genetics, p. 114 – 120. IN: Michler, C.H. et al., eds. Black walnut in a new century, Proceedings of the 6th Walnut Council Research Symposium; July 25-28, Lafayette, IN. Gen. Tech. Rep. NC-243. U.S.D.A. Forest Service, North Central Research Station, St. Paul, MN.

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