Disease Hotline Issue 12


Horsechestnut leaf blotch. Photo taken by: M. Petitjean, University of Massachusetts Extension & found at: http://www.umassgreeninfo.org/fact_sheets/diseases/guignardia_leaf_blotch.pdf

Cercospora leafspot on rose. Photo provided by: Paul Bachi, University of Kentucky Research & Education Center, Bugwood.org

Cedar apple rust. Photo provided by: USDA Forest Service – Region 8 Archive, USDA Forest Service, Bugwood.org

Cedar apple rust. Photo provided by: Daniel H. Brown, USDA Forest Service, Bugwood.org

Disease Hotline Issue 4


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

Cercospora leaf spot on rose. Photo found at: http://edis.ifas.ufl.edu/LyraEDISServlet?command=getImageDetailℑ_soid=FIGURE%201&document;_soid=PP267&document;_version=42330

Kabatina blight on juniper. Photo found at: http://urbanext.illinois.edu/hortanswers/detailproblem.cfm?PathogenID=20

Disease Hotline Issue 20


Alfalfa mosaic virus on potato. Photo provided by: Howard F. Schwartz, Colorado State University, Bugwood.org

Cercospora leaf spot on Bigleaf Hydrangea. Photo found at: http://www.aces.edu/pubs/docs/A/ANR-1212/

Cercospora leaf spot on rose. Photo provided by: Paul Bachi, University of Kentucky Research & Education Center, Bugwood.org

Daylily leafstreak. Photo found at: http://www.umass.edu/umext/floriculture/fact_sheets/pest_management/daylily_rust_streak.htm

What’s Hot HL Issue 23


Cercospora leafspot on rose. Photo by: Bob Mulrooney, Plant Pathologist, University of Delaware

Pyracantha scab on fruits. Photo by: Bob Mulrooney, Plant Pathologist, University of Delaware

Puss caterpillar. Photo by: Gerald J. Lenhard, , Bugwood.org

Puss caterpillar. Photo by: Lacy L. Hyche, Auburn University, Bugwood.org

Plumbago foliar nematode. Photo by: Bob Mulrooney, Plant Pathologist, University of Delaware