Disease Hotline Issue 10

Dutch elm disease from a distance. Photo provided by: William M. Brown Jr., United States, Bugwood.org

Vascular streaking in affected wood. Photo provided by: Paul H. Peacher, USDA Forest Service, Bugwood.org

Galleries of European elm bark beetle and affected wood. Photo provided by: William M. Brown Jr., United States, Bugwood.org

What's Hot HL Issue 8

Dutch elm disease. Photo provided by: William Jacobi, Colorado State University, Bugwood.org

Damage caused by hawthorn leaf miner. Photo provided by: Whitney Cranshaw, Colorado State University, Bugwood.org

Diseae Hotline Issue 9

Ash rust. Photo provided by: Edward L. Barnard, Florida Department of Agriculture and Consumer Services, Bugwood.org

Black spot on rose. Photo provided by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org

Dutch elm disease early stage symptoms. Photo provided by: Joseph O'Brien, USDA Forest Service, Bugwood.org

Dutch elm disease. Photo provided by: William Jacobi, Colorado State University, Bugwood.org

Symptoms of Dutch elm disease. Photo provided by: Fabio Stergulc, Università di Udine, Bugwood.org

Streaking of Dutch elm disease. Photo provided by: Paul H. Peacher, USDA Forest Service, Bugwood.org

Dutch elm disease fruiting bodies. Photo provided by: William Jacobi, Colorado State University, Bugwood.org

Disease Hotline Issue 10

Dutch Elm disease. Photo by: William M. Brown Jr., Bugwood.org

Vascular staining by fungus. Photo by: Paul H. Peacher, USDA Forest Service, Bugwood.org.

Powdery mildew on roses. Photo by Bob Mulrooney, Plant Pathologist, University of Delaware.

Powdery Mildew on common lilac. Photo by: Whitney Cranshaw, Colorado State University, Bugwood.org.

Frog-eye leaf spot on red maple. Photo by Bob Mulrooney, Plant Pathologist, University of Delaware.