No adverse effect on flower production has been reported, but leaf symptoms may detract form the overall quality of the plant. Infected plants may be more sensitive to winter kill. The only way to control rose mosaic is to remove infected plants. Because of no adverse effect on flowering, most people leave the plants alone and ignore the virus. Disease Controls Most rose diseases can be controlled or prevented with simple maintenance or cultural practices.
Fungicides are necessary only in severe cases.
Buy and transplant disease-free plants. Choose resistant varieties. Varieties are available with resistance to powder mildew, blackspot and many other diseases. Avoid wounding plants during transplanting. Plant roses in areas with good soil drainage and ventilation.