Leaves are mottled yellow-green. Plants may be stunted, and flowers may be smaller than normal. In some cases, the petals are streaked.
This virus disease infects ranunculus plants and tubers. The severity of infection varies from plant to plant. Mosaic does not kill ranunculus, but greatly reduces their overall vigor and beauty. The virus is spread by aphids that feed on diseased plants, then transmit the virus to healthy plants when they feed again. Mosaic persists in the plant indefinitely. Tubers obtained from diseased plants are also infected.
There are no chemicals that control virus diseases. Discard infected plants. Prevent the spread of the virus by keeping the aphid population under control. (For more information about disease-carrying aphids and their control, see Vectors of Plant Diseases.)
Visit Books That Work at http://www.btw.com