Rose rosette is a fairly common disease of roses that can cause significant damage. Although more commonly known on weedy
Symptoms of rose rosette can vary greatly but typically include rapid growth of shoots, "witches' brooms" (tufts of branches growing close together), development of tufts of small, deformed, reddish leaves, and excessive thorniness. Affected plants typically decline over time and eventually die within one or two years. The deformation of leaves caused by rose rosette can be similar to the results of herbicide injury.
The cause of rose rosette disease has not been determined. It is suspected to be caused by a virus, and is transmitted from plant to plant by tiny
Unfortunately, a rose plant with rose rosette cannot be cured. Infected plants should be removed to prevent spread of the disease in the landscape.
For more information visit Rose Rosette Disease fact sheet