A collective name for several fungi that cause leaf spots on different crops and that can spread to the stems, all of which can be recognised by the white powdery coating on surface. Roses, gerberas, cucumbers, tomatoes, grapes, kalanchoe, hortensia, oak, hypericum and other plants are susceptible to powdery mildew.
Spray with Argicin®Plus or Algicin® (suitable for use in organic production). In the case of a severe infection, we recommend combining one of these products with Cuprum.
For cucumber production: a combination of SalicylPure applied in the A fertilizer feeder (for both open-air and greenhouse production) and Cuprum applied via LVM achieves very good results.