PP260 Black Rot of Orchids Caused by Phytophthora palmivora and Phytophthora cactorum

PP260, a 5-page illustrated fact sheet by R.A. Cating, A. J. Palmateer, C. M. Stiles, P. A. Rayside, and D. A. Davison, describes this disease of orchids, its host range, symptoms, diagnosis, management, and nursery santiation recommendations. Includes references. Published by the UF Department of Plant Pathology, January 2009.