The symptom produced on this baylaurel, or myrtlewood, is just chlorotic leaf tips.
Photo by Everett Hansen
Cause The fungus Colletotrichumgloeosporioides has been found a few times by the OSU Plant Clinic. Young juvenile tissue is susceptible to infection while older mature leaves are resistant. A problem during unusually high rainfall years.
Symptoms Brown necrotic leaf blight as well as black leaf blights and twig dieback of new shoots.
Cause Pythium debaryanum, Globisporangium ultimum (formerly P. ultimum), Rhizoctoniasolani, and Fusarium spp. Pythium and Globisporangium are favored by cool, overly wet soil conditions, Rhizoctonia by warm soil temperatures.
