Pathogen
Alert: Chrysanthemum White Rust detected in Massachusetts
(Sep 26, 2008) Massachusetts Introduced Pests Outreach Project.
Chrysanthemum white rust (Puccinia horiana, "CWR"), a
serious fungal disease of chrysanthemums, has been
discovered in Massachusetts. Infected plants were found
at nurseries and at retail locations, with diagnoses confirmed by
plant pathologists from USDA APHIS-PPQ. This pathogen can spread quickly
in greenhouse and nursery environments, causing severe crop losses.
