Rose Rosette Disease and Palm Disease with Dr. Kevin Ong

Dr. Kevin Ong’s presentation on Rose Rosette Disease and Palm Disease provides a comprehensive overview of these diseases, their causes, symptoms, management, and ongoing research efforts. Here are the key points:

Rose Rosette Disease

  • Introduction: Rose Rosette Disease is caused by a virus, specifically the Rose Rosette Virus, which affects roses. The disease is transmitted by a mite that can carry the virus from one plant to another.
  • Symptoms: Common symptoms include thickened canes, increased red pigmentation, excessive leaf deformation, and the formation of rosettes (witch’s broom) on the plant.
  • Management and Control: The primary recommendation for managing Rose Rosette Disease is to remove and dispose of infected plants properly to prevent the spread of the virus. Other recommendations include treating adjacent plants with insecticides to slow the spread, removing wild roses, and using the Rose Rosette website to report and track the disease.
  • Research and Future Directions: The disease is being actively studied, with ongoing research to identify resistant cultivars and improve management strategies. The Rose Rosette website serves as a resource for the latest information and research findings.
  • Historical Context: Rose Rosette Disease has been known since the 1940s, with reports of the disease spreading across the United States over the years. The disease is suspected to have been introduced to the U.S. through the multiflora rose, which was used as a rootstock for cultivated roses.
  • Current Status and Spread: The disease affects all cultivated roses and is susceptible to spread through the mite vector. There is ongoing research to understand the disease’s spread and to develop effective management strategies.


Dr. Ong emphasizes the importance of staying informed through resources like the Rose Rosette website and participating in research efforts to combat the disease.

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