Horse chestnut leaf blotch. Photo by: M. Petitjean, University of Massachusetts Extension & found at: http://www.umassgreeninfo.org/fact_sheets/diseases/guignardia_leaf_blotch.pdf
Oak infested with oak anthracnose. Photo provided by: Joseph O'Brien, USDA Forest Service, Bugwood.org
Oak anthracnose on oak leaf. Photo provided by: Joseph O'Brien, USDA Forest Service, Bugwood.org
Close-up of oak anthracnose. Photo provided by: Robert L. Anderson, USDA Forest Service, Bugwood.org
Bacterial leaf scorch. Photo provided by: Randy Cyr, Greentree, Bugwood.org
Glassy-winged sharpshooter vectors Xylella fastidiosa in grape plants, the same bacteria responsible for BLS. A possible vector. Photo provided by: Reyes Garcia III, USDA Agricultural Research Service, Bugwood.org
Grass sharpshooter is also known to vector X. fastidiosa in grape plants. Another potential vector for BLS. Photo provided by: Jack Clark, University of California - Davis, Bugwood.org
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