On Aug. 18th, 2005, the Canadian Food Inspection Agency confirmed the presence of chrysanthemum white rust (CWR) in garden mums at a Langley, BC, Canada nursery and a nearby residential garden, said NAPPO’s Phytosanitary Alert System.
The nursery was placed under a Prohibition of Movement, and approximately 50,000 plants are being disposed of according to the CFIA CWR Eradication Protocol. Follow-up monitoring and surveys are being conducted at the affected nursery, residential property and adjacent properties. Trace back and trace forward activities were also conducted, and no other commercial growing facilities have been found infested with CWR.
CWR is a serious fungal disease of chrysanthemum, especially of the common florist chrysanthemum, Dendranthema grandiflora . The introduction and spread of CWR may lead to serious crop loss and may impact export markets, according to the Phytosanitary Alert System