Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
Chrysanthemum white rust is a serious disease of chrysanthemum caused by a fungus called Puccinia horiana. It spreads very quickly through the crop, covering the plants with pustules. It is a quarantine disease in Canada which means that its presence must be reported to the Canadian Food Inspection Agency (CFIA).
