Deadly Plant Disease Threatens $250M Rose Business

NEW ORLEANS — The outlook for American-grown roses is becoming a bit less rosy, with the spread of an incurable virus that’s causing major damage to the nation’s $250-million-a-year rose business.

U.S. rose bush producers account for the bulk of that business and face a growing challenge from rose rosette disease, which can kill roses within three years. Its many symptoms include super-thorny stems and clusters of stems called rosettes or witches’ brooms.

One producer spent $1 million getting rid of rose rosette disease and some smaller nurseries have had to destroy 10,000 plants, said Dr. David Byrne of Texas A&M University, leader of a $4.6 million multistate project to study the virus and the mite that spreads it, and to find resistant rose varieties.

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