Disease Hotline Issue 12

Powdery mildew on crabapple and apple. Photo provided by: University of Georgia Plant Pathology Archive, University of Georgia, Bugwood.org

Oak leaf blister. Photo found at: http://www.ppdl.purdue.edu/PPDL/images/TaphrinaOak1.jpg

Cedar quince rust on a juniper twig. Photo found at: http://www.uky.edu/Ag/kpn/kpn_09/pn_090414.html

Disease Hotline Issue 18

Puffball. Photo provided by: Nancy Gregory, Plant diagnostician, University of Delaware.

Peony blotch on tree peony leaves.

Hollyhock rust. Image found at the following website: http://www.plantpath.iastate.edu/pdc/node/142

Powdery mildew. Photo provided by: Mike Schomaker, Colorado State Forest Service, Bugwood.org

Giant puffball. Photo provided by: Joseph LaForest, University of Georgia, Bugwood.org

Bacterial leaf scorch distant view. Photo provided by: Edward L. Barnard, Florida Department of Agriculture and Consumer Services, Bugwood.org

Bacterial leaf scorch. Photo provided by: Theodor D. Leininger, USDA Forest Service, Bugwood.org

Daylily leaf streak. Image found at http://hyg.aces.uiuc.edu/secure/subscribers/200611b.html.

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.