BEEBALM               RUST Rust causes yellow spots on leaves and infected leaves may drop.

Symptoms: Yellow spots on leaves. Undersides of spots develop rust-colored pustules which contain spores. Photo by Janna Beckerman.

General Information

Causal organism:	Fungus. Puccinia spp.
Months of infection:	Growing Season
Method of dispersal:	Wind, rain, moisture.
Infection point:	Leaves.

Control Measures

Control:

Sanitation.

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