In order for oleander to remain an attractive eye-catcher with its shiny foliage and delicate flowers, it needs a suitable location and optimal care. Otherwise, the Mediterranean shrub is unfortunately very sensitive to both pest and fungal infestation. Powdery mildew attacks stressed plants, especially in summer.
Fresh milk helps with powdery mildew on oleanders
Milk helps against powdery mildew
Infection typically manifests itself as a wipeable, white plaque that primarily covers leaves and shoots. Other characteristics are reduced growth and fewer flowers. Although the oleander does not die immediately from powdery mildew, it puts all its energy into fighting it. The plant does not have too much energy left for growth or flowering. Therefore, you should intervene to help at the first sign. Cut back affected parts of the plant vigorously and spray the affected oleander with a mixture of whole milk and water (in a ratio of 1:10). However, only fresh milk is effective; the necessary fungicidal microorganisms are no longer present in preserved milk.
tips
Since oleander is poisonous, you should always wear gloves when cutting the oleander.