Diplocarpon

Causes black spot in rose and leaf spots on other members of the Rosacaea family such as hawthorn and Photinia.

Recommended products:

Spray with Argicin®Plus or Algicin® (suitable for use in organic production). In the case of a severe infection, combine Argicin®Plus or Algicin® with Cuprum.

For greenhouse production, we recommend drip feeding SalicylPure and applying Cuprum via LVM.