Frog-eye leaf spot and Botryosphaeria canker have pictures posted on the website. Do not have images for spot anthracnose and golden canker. Please use the search function for the available photos.
Tag Archives: frog-eye leafspot
Disease Hotline Issue 11
Frog-eye leaf spot on red maple. Photo by: Joseph O’Brien, USDA Forest Service, Bugwood.org
Bacteria blight on lilac. Twigs turn black and wilt from the tips back to the stem. (provided by Karen L. Snover-Clift, Cornell University) Photo found at: http://plantclinic.cornell.edu/FactSheets/LilacBactBlight/lilacbactblight.htm
Bacteria blight on lilac. Leaves often show damage around the margins and/or along the central vein. (provided by Karen L. Snover-Clift, Cornell University). Photo found at: http://plantclinic.cornell.edu/FactSheets/LilacBactBlight/lilacbactblight.htm
Disease Hotline Issue 7
Frogeye leafspot on apple caused by Botryosphaeria obtusa. Photo by: Bob Mulrooney, Plant Pathologist Specialist, University of Delaware.
Powdery Mildew on flowering dogwood. Photo by: Bob Mulrooney, Plant Pathologist Specialist, University of Delaware.
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.
Disease Hotline Issue 3
Frog-eye leaf spot on maple.
Anthracnose on liriope.
Botyosphaeria canker on Cornus.
Sycamore anthracnose. All photos by Bob Mulrooney, Extension Plant Pathologist, University of Delaware.