Fungal Gummosis in Peach
Amber-brown gumming on young peach trunks caused by Botryosphaeria dothidea.
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How to Cite

Sherman, Sara, Mercy Olmstead, Philip Harmon, and Thomas Beckman. 2015. “Fungal Gummosis in Peach: HS1265/HS1265, 7/2015”. EDIS 2015 (6). Gainesville, FL:3.


Fungal gummosis in peach occurs when the fungus Botryosphaeria dothidea infects small openings or wounds in tree branches or trunks. The disease causes blisters on the tree that form lesions and eventually ooze gum (sap). This 3-page fact sheet covers the disease cycle and management of fungal gummosis in peach, which is often difficult to control. Written by Sara Sherman, Mercy Olmstead, Philip Harmon, and Thomas Beckman, and published by the UF Department of Horticultural Sciences, July 2015.

HS1265/HS1265: Fungal Gummosis in Peach (
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Pusey, P. L. 1986. "Symptomatic responses of peach trees to various isolates of Botryosphaeria dothidea." Plant Disease 70: 568-572.

Pusey, P. L. 1989. "Influence of water stress on susceptibility of nonwounded peach bark to Botryosphaeria dothidea." Plant Disease 73: 1000-1003.

Weaver, D. J. 1974. "A gummosis disease of peach trees caused by Botryosphaeria dothidea." Phytopathology 64: 1429-1432.