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Landscape Alert Staff

Vol. 22, No. 1, March 16, 2007

Scouting for diseases: Botrytis blight Jan Byrne MSU Diagnostic Services


Foliar blighting of Rudbeckia.

Severe leaf spotting. Infections developed during prolonged, wet weather.	Severe leaf spotting on Lilium, a very susceptible host.

Basal ends of cuttings can be infected during propagation. The gray, fuzzy mold is characteristic of B. cinerea sporulation.	Sclerotia, the overwintering structure, on dead stem tissue.

The MSU IPM Program maintains this site as an access point to pest management information at MSU. The IPM Program is administered within the Department of Entomology, fueled by research from the Michigan Agricultural Experiment Station, delivered to citizens through MSU Extension, and proud to be a part of Project GREEEN.
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