Petiole (Rachis) Blight of Palm
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How to Cite

Elliott, Monica L. 2019. “Petiole (Rachis) Blight of Palm: PP-221/PP145, 1/2006”. EDIS 2006 (1). Gainesville, FL.


In general, the “typical” or “classic” petiole blight is a disease in which the pathogen only infects the petiole. The disease symptoms may look like the pathogen has also infected the leaf blade, but this is a secondary affect from petiole infection. An exception to the “typical” petiole blight is a disease caused by Pestalotiopsis. This pathogen causes both a leaf spot and blight as well as a petiole or rachis blight, usually at the same time. It is discussed in a separate fact sheet (PP141). This document is PP-221, one of a series of the Plant Pathology Department, UF/IFAS Extension. Original publication date January 2006.

PP-221/PP145: Petiole (Rachis) Blight of Palm (
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Barr, M. E., H. D. Ohr, and M. K. Murphy. 1989. The genus Serenomyces on palms. Mycologia 81:47-51.

Hyde, K. D., and P. F. Cannon. 1999. Fungi causing tar spots on palms. Mycologial Papers, No. 175. CABI Publishing, Wallingford, U.K.

Simone, G. W. 2004. Rachis blight. Pages 33-34 in: Compendium of Diseases and Disorders of Ornamental Palms. M. L. Elliott, T. K. Broschat, J. Y. Uchida, and G. W. Simone, eds. American Phytopathological Society, St. Paul, MN.

Simone, G. W. 1998. Prevention and management of palm diseases in Floridas landscapes. PP-Mimeo 98-4. Florida Cooperative Extension Service, Gainesville, FL.