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Chrysanthemum White Rust

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Chrysanthemum white rust, symptoms
Chrysanthemum white rust, symptoms - Photo by Flroida Division of Plant Industry, Florida Department of Agriculture and Consumer Services
Scientific Name: 

Puccinia horiana Henn. (Whipps 1993)

Common Name: 
Chrysanthemum white rust
Native To: 
Date of U.S. Introduction: 

There have been several outbreaks in the U.S., but the disease has been eradicated each time. (Hernández 2004)

Means of Introduction: 

Potential of this organism to be transported with prohibited articles of chrysanthemum. (APHIS 2008)


Has become established throughout most of the world. If established in the U.S., chrysanthemum white rust could have significant impact on both greenhouse and outdoor chrysanthemum plants. (Hernández 2004)

Current U.S. Distribution: 
Not currently established

Federally Regulated

U.S. Government Printing Office. Electronic Code of Federal Regulations.


University of Georgia. Center for Invasive Species and Ecosystem Health.


Google. YouTube; New York State Flower Industries.

Selected Resources

The section below contains highly relevant resources for this species, organized by source. Or, to display all related content view all resources for Chrysanthemum White Rust.

Federal Government
USDA. ARS. Systematic Mycology and Microbiology Laboratory.
USDA. APHIS. Plant Protection and Quarantine.
State and Local Government

Florida Department of Agriculture and Consumer Services. Division of Plant Industry.

See also: Plant Industry Pest Alerts for more pests

Minnesota Department of Agriculture.
Michigan State University. Integrated Pest Management Program.
See also: Forecasting Invasion Risks for more factsheets
University of Massachusetts - Amherst. UMass Extension. Greenhouse Crops & Floriculture Program.