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Butternut Canker

Scientific Name

Ophiognomonia clavigignenti-juglandacearum (Nair, Kostichka, & Kuntz) Broders & Boland (Broders and Boland 2011)

Common Name

Butternut canker


Formerly known as Sirococcus clavigignenti-juglandacearum

Native To

Unknown, possibly Asia (Furnier et al. 1999)

Date of U.S. Introduction

First detected in 1967, but may have been present before then (Farlee et al. 2010)

Means of Introduction

Lethal disease of butternut trees (Juglans cinerea) (Farlee et al. 2010)

Current U.S. Distribution

Northeastern and Midwestern U.S.

Butternut canker
Image use policy

Butternut canker symptoms


Photo by USDA, FS, Northeastern Area

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Distribution / Maps / Survey Status


  • YouTube - Butternut Seed Orchard

    • Google. Youtube; Upper Thames River Conservation Authority (Ontario).

    • The Upper Thames River Conservation Authority (UTRCA) is working with the Forest Gene Conservation Association (FGCA) to preserve endangered native butternut trees. This species is threatened by butternut canker, a fungal disease, and protected under Ontario‚Äôs Endangered Species Act.

Selected Resources

The section below contains highly relevant resources for this species, organized by source.

Federal Government
International Government
State and Local Government