Saf scale insects are not noticeable at first glance, but an infestation on hydrangeas can have serious consequences for your beloved ornamental shrubs. Read this article to find out how to prevent pest infestations and what you can do in the event of an acute infestation.
What can I do against scale insects on hydrangeas?
Saf scale insects damage hydrangeas by sucking the sap from their leaves and leaving a sticky coating that makes the plant more susceptible to fungal attack. You can combat the infestation by cutting off infected shoots, collecting the pests or spraying them with a soap mixture.
How do I recognize scale insects on hydrangeas?
Sac scale insects, which belong to the group of scale insects, are3 to 5 millimeter liceUsing glands, the pests produce fine white threads that they drag behind them like a sack. Their heads are protected from predators by a shield. The sac scale insects are a problem for hydrangeas because they suck the plant sap from their leaves. In addition, their sticky honeydew can cause the hydrangeas to become infected with a fungus. Since honeydew is very popular with ants, these can be the first sign of a scale insect infestation.
How can I successfully combat bag scale insects?
As soon as you have noticed an infestation of scale insects on your hydrangeas, you should immediately remove theinfested shootsand dispose of them. Alternatively, you can collect the lice or spray them withsoapy water. However, you should only do the latter in the early morning or late evening, otherwise the sun can burn the wet leaves. However, if the infestation is more severe, you will have to use oil-based plant protection sprays.
Tip
Preventing scale insects on hydrangeas
He althy plants are more resistant to pests such as the bag scale insect. Therefore, pay attention to good care, water your hydrangeas sufficiently and don't forget to supply them with the necessary nutrients through regular fertilizer.
