AT A GLANCE
What does a white infestation on the wood of my hydrangea mean?
Which pests cause the white infestation on hydrangea wood?
A white infestation on your hydrangeas can result Mealybug Clues. The name of the little white pests is due to their woolly hair. They feed on the sap of the hydrangea, which they suck from the leaves. In this process, they not only weaken the hydrangeas, but can also transmit viruses and fungi. You can discover the white webs on both the leaves and the shoots. You can take the louse with you parasitic wasps,(€19.00 at Amazon*) Combat ladybirds or lacewings.
also read
Can a fungal infestation also lead to a white coating?
Mushrooms can do it too white topping
cause on hydrangeas. In the event of an infestation gray mold the flowers, leaves, and stems of the plant become coated in a dusty, off-white coating. If you have one fungus notice, you should immediately dispose of all infested parts of the plant and ensure a drier environment.Tip
Powdery mildew causes white coating on leaves
If you do not discover the white infestation on the wood, but on the leaves of the hydrangea, it is probably mildew. In the event of an infestation, it helps to treat the plants with a milk-water mixture spray, as the lactic acid bacteria it contains can kill the fungus.
