University of Illinois Extension
University of Illinois Extension - Selecting Shrubs for Your Home
Phomopsis Gall
Phomopsis spp.
Phomopsis galls on forsythia.
Severity: 3 out of 5
Frequency: 2 out of 5
Symptoms: Galls can be as small as a pea to as big as an inch or more. The size of the gall varies with plant infected, the age of the plant tissue and where on the plant infection occurs. In general the galls are "round" and are found singly or in small clusters. On forsythia, the galls are often clustered.
Cycle: The fungus lives for several years in the galls before dying. Little is known about the life cycle of this pathogen.
Management: Prune out and destroy infected plant tissue.
Associated shrubs: