Skip to main content

U.S. flag An official website of the United States government

Animal and Plant Health Inspection Service
U.S. Department of Agriculture
USDA FAQ's and resources about coronavirus (COVID-19).  LEARN MORE

Detection of Ralstonia solanacearum race 3 biovar 2 in a United States Greenhouse

FOR INFORMATION
DA-2020-09
April 21, 2020

To: State and Territory Agricultural Regulatory Officials 

Animal and Plant Health Inspection Service (APHIS) confirmed detection of the pathogen Ralstonia solanacearum race 3 biovar 2 (Rs R3bv2) in a symptomatic geranium (Pelargonium sp.) plant located in a Michigan greenhouse. Plant Protection and Quarantine (PPQ) officials issued an Emergency Action Notification to the Michigan business to immediately prohibit the sale or movement of all geraniums and any other suspect plant material on the property. Rs R3bv2, commonly referred to as Southern wilt, bacterial wilt, and brown rot of potato, causes a wilt disease in several important agricultural crops such as potatoes, tomatoes, peppers, and eggplant. 

The geranium sample that tested positive was from a Fantasia ‘Pink Flare’ variety of geranium, which had been imported from a production facility in Guatemala. The importer is cooperating fully in the investigation, has voluntarily stopped sales of all Fantasia ‘Pink Flare’ geraniums from Guatemala, and has agreed to destroy all shipments that are pending export or in route to the United States. They have also provided APHIS with a list of U.S. greenhouses that received Fantasia ‘Pink Flare’ geranium cuttings from the same facility. 

APHIS and State Officials are inspecting all greenhouses that received Fantasia ‘Pink Flare’ geranium cuttings, collecting trace-forward information, and destroying all Fantasia ‘Pink Flare’ geraniums and co-mingled and exposed host and non-host plants. Cleaning and disinfecting the greenhouses will follow APHIS-approved methods. 

For more information on Rs R3bv2, please see the following Pest Alert:

https://www.ncipmc.org/projects/pest-alerts1/ralstonia-solanacerum/ 

For additional information about the Ralstonia Response Program, please contact Erin Otto, National Policy Manager, at erin.m.otto@usda.gov, or 301-851-3881. 

/s/

Osama El-Lissy
Deputy Administrator
Plant Protection and Quarantine


USDA touches the lives of all Americans each day in so many positive ways. In the Biden-Harris Administration, USDA is transforming America’s food system with a greater focus on more resilient local and regional food production, fairer markets for all producers, ensuring access to safe, healthy and nutritious food in all communities, building new markets and streams of income for farmers and producers using climate smart food and forestry practices, making historic investments in infrastructure and clean energy capabilities in rural America, and committing to equity across the Department by removing systemic barriers and building a workforce more representative of America. To learn more, visit www.usda.gov.

Complementary Content
${loading}