Cucumber mosaic virus

This serious viral disease affects, and may even kill, a surprising number of different vegetables and flowers. It is usually spread by aphids but can also be spread by contact. It survives between crops in other hosts, usually weeds.


  • Distinctive light green/yellow and dark green mosaic pattern on leaves
  • Leaves may curl downwards
  • Fruit become misshapen, knobbly and pale, even white
  • Growth is stunted and the plant may eventually die

Prevention & control

  • Grow resistant varieties
  • Maintain good crop hygiene, clearing beds at the end of the season and remove any weeds which look as if they may have been affected
  • Prevent aphids transmitting the disease with enviromesh
  • Remove and burn affected plants - as the disease is systemic, there is no point just removing affected leaves
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