An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Dutch Elm Disease

Scientific Name

Ophiostoma ulmi (Buisman) Nannf. and Ophiostoma novo-ulmi Brasier (ITIS)

Common Name

Dutch elm disease (DED)

Native To

Unknown, possibly Asia (Brasier et al. 2001)

Date of U.S. Introduction

First discovered in the U.S. during the 1930s (Olson et al.)

Means of Introduction

Introduced accidentally on diseased logs imported from Europe (Flores 2006)


Lethal fungal disease of elm trees (particularly American elms (Ulmus americana), which are more susceptible to the disease than other elm species) (Olson et al.)

Current U.S. Distribution

Has been found throughout the entire U.S. except for the desert Southwest

Dutch elm disease -
Image use policy

Dutch elm disease symptoms


Roland J. Stipes Virginia Polytechnic Institute and State University

Find more images


  • Forest Service, Partners Work to Restore American Elm

    • Mar 29, 2023
    • USDA. Forest Service.

    • Once common across eastern North America, the American elm is deeply ingrained in our nation's history. However, a large portion of the tree population was affected by Dutch Elm Disease beginning in the 1930s. Today, short-lived elms can still be found in forests, but because they tend to be much smaller, they no longer play such an important ecological role. A multifaceted collaborative effort is underway to restore the stately and once dominant American elm to persist on the landscape of the nation's forests.

Distribution / Maps / Survey Status

  • Alien Forest Pest Explorer (AFPE)

    • USDA. FS. Northern Research Station.

    • The Alien Forest Pest Explorer (AFPE) is an interactive web tool which provides detailed spatial data describing pest distributions and host inventory estimates for damaging, non-indigenous forest insect and disease pathogens currently established in the U.S. Provides static maps displaying pest distributions (state and county) and a new interactive mapping tool (beta).


Selected Resources

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

Council or Task Force
Federal Government
International Government
State and Local Government