Does it just infect Multiflora?

NO.

That is a common misconception.  A person advocating RRD as a form of weed control claimed RRD seldom infected ornamental roses, but it's simply untrue in our part of the country (Tennessee) as well as other states.  There is even an article in the Bibliography of this e-book that shows an attempt to change the name of the disease to "Rose Rosette of Multiflora" to promote this misconception.  We find  RRD infects almost all garden roses here in East Tennessee and throughout the eastern United States, wherever there is a source of contageon upwind of rose gardens.  
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