BEEBALM                    VIRUSES Viruses on beebalm mainly affect the leaves. Some of the most common symptoms are mosaic, line, or ring patterns on the leaves, dwarfing, and leaf curling.

Symptoms: Yellow & green ring spots, mosaic, or line patterns on leaves. Leaves may be stunted, curled, or distorted. Photo by Janna Beckerman

General Information

Causal organism:	Various viruses
Over wintering:	In plant material
Months of infection:	Growing season
Method of dispersal:	Propagation and grafting, or vectored by insects or nematodes
Infection point:	Leaves & stems

Control Measures

Control:	Purchase disease-free plants. Remove virus infected plants.
Labeled fungicides	None
Comments:	Virus-infected plants may grow and bloom normally. If infection is severe, plant should be removed and discarded. Laboratory testing is necessary for confirmation of viral infections.

Definitions & Disclaimer

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Plant Disease Diagnostics
University of Minnesota, Yard and Garden Clinic
Developed (1999) and maintained by
Chad J. Behrendt, Ph.D. and Crystal M. Floyd

For plant disease questions contact the Yard and Garden Line Content Last Updated 09/07/00 View University of Minnesota Disclaimer