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Circular 1176
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Rose rosette virus vectored by eriophyid mites can cause major problems for nurseries, landscapers, and gardeners alike. The spread of this mite and virus can cause serious damage to plants, decreasing profits for nurseries and landscapers. The virus causes the plants to become undesirable and will eventually result in the death of the plant, which affects all segments of the rose industry as well as rosarians and home gardeners. RRD is caused by the rose rosette virus (Emaravirus) that affects multiflora and ornamental roses. This virus is causing devastation to roses in several regions of North America, but it is particularly problematic in the eastern half of the continent. It has been estimated that about 93% of rose plants that are susceptible to this disease have the potential to be killed in a matter of decades. 
 
The symptoms of disease on ornamental roses are a yellow mosaic pattern appearing on leaves, increased thorniness, abnormally shaped foliage and early production of lateral buds that make up the witches’ broom. The symptoms differ slightly in multiflora roses. These roses still get witches broom and misshapen foliage. Unlike the ornamentals, they get a reddish-purple vein mosaic pattern on their leaves and produce bright-red foliage and lateral shoots. The disease eventually results in death of the infected plant.

Status and Revision History
Published on Jan 17, 2020

Faculty
Shimat V. Joseph Associate Professor, Entomology Alejandra Monterrosa Graduate Research Assistant, Entomology Jean Williams-Woodward Extension Plant Pathologist - Ornamentals, Legume Forages, Hydroponics, Plant Pathology William G. Hudson Professor - Extension Entomologist, Entomology Bodie V. Pennisi Vincent J. Dooley Professorship in Horticulture; Emphasis: Commercial & sustainable landscape; pollinators, Horticulture

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