Chrysanthemum white rust (Puccinia horiana)
Chrysanthemum white rust (CWR) is a USDA quarantined plant pathogen that poses a potential trade barrier to growers of chrysanthemums in Virginia if introduced. The disease also poses a risk of increasing management costs if introduced into the Commonwealth as control of this pathogen requires weekly fungicide applications. For these reasons, VDACS plans to continue monitoring and eradication efforts to keep this pathogen out of the Commonwealth. In 2009, an estimated 15,000 Chrysanthemums were inspected state-wide by VDACS nursery inspectors for CWR. In 2010, over 100,000 plants were inspected by VDACS.