Buddleia leaf infested with foliar nematode. Photo provided by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware
Peony leaf blotch. Photo provided by:
Jody Fetzer, New York Botanical Garden, Bugwood.org
Alfalfa mosaic virus. Photo provided by:
Howard F. Schwartz, Colorado State University, Bugwood.org
Fire blight. Photo provided by: William Jacobi, Colorado State University, Bugwood.org