The problem is rose rosette disease. This disease is caused by a virus or viruslike pathogen. It is spread from one plant to another by eriophyid mites. Rose rosette disease has been known to kill multiflora rose within one year and can also infest ornamental roses. Ornamental roses may be protected from the the disease with the use of insecticides to control the mites. The insecticide should be applied every seven to 10 days when tender growth is present on the canes (usually from mid-May through early September). The new succulent growth appears to be the most desirable for mite feeding. Roses with rose rosette disease should be dug up and destroyed because there are no controls. Contact your local Extension office for insecticide recommendations.
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My rose bush has unusual (wild) growth. The limbs are red, extra thorny, and very long. What is wrong?
Last Updated: January 07, 2008
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