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

USDA Confirms Ralstonia solanacearum race 3 biovar 2 in Geranium Plants in Greenhouse

Washington, D.C. April 21, 2020 – The United States Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) has confirmed the detection of Ralstonia solanacearum race 3 biovar 2 (RSr3b2) in a single variety of geranium plants located in a Michigan greenhouse. This particular type of Ralstonia can cause a wilt disease in several important agricultural crops such as potatoes, tomatoes, peppers and eggplant. This is the first confirmed case of RSr3b2 in a U.S. greenhouse since 2004.

APHIS has taken immediate action to contain and eradicate the disease from the Michigan facility. We confirmed that the infected plants came from a greenhouse in Guatemala. The importer immediately stopped shipments of geranium plants to the United States upon confirmation of the detection and has voluntarily agreed to destroy all shipments that were pending export or in route to the United States. They also provided a list of 288 greenhouses in 39 States that received geranium cuttings from the Guatemala facility.

Federal and State agriculture officials are currently visiting the 288 greenhouse locations. They will inspect, isolate and destroy all Fantasia ‘Pink Flare’ geranium plants and co-mingled and exposed host and non-host plants. They will also isolate, sample, and destroy other geranium varieties and comingled and exposed host and non-host plants, if the other geraniums test positive for RSr3b2. After the plants are destroyed, the greenhouses will be cleaned according to our sanitation protocol to clear the facility of the pathogen.


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

Complementary Content