The beech ornamental louse is the most common
The beech ornamental louse is an aphid that lives mainly on the underside of the beech leaf. Although it has wings, it stays on the tree all the time.
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The beech ornamental louse is surrounded by a woolly fur. That is why it is also called beech wool louse. It secretes a liquid called honeydew.
Signs of beech ornamental lice infestation
Beech ornamental lice infestation can be seen on the leaves. the leaves begin to deform. They curl up, dry up and fall off.
These signs can also occur with fungal diseases. So look under the leaves to see if there are mealybugs and if the leaves are very sticky. Sometimes ant trails also run up into the tree.
How to combat beech pests
Beech ornamental lice are not easy to control. They are trapped by the honeydew and cannot be removed with normal sharpening agents.
- Cut off infected parts
- Apply insecticide
- Establish beneficial insects in the garden
With a low infestation cut Remove all affected parts of the plant. Carefully collect the fallen leaves. Dispose of leaves and shoots in the garbage can and not on the compost heap.
If the infestation is severe, get an insecticide that is suitable for mealybugs. It works by spreading a film over the lice, depriving them of oxygen. These funds should be used sparingly, as they can harm beneficial insects.
Establish beneficial insects in the garden
The best and healthiest control measure is the settlement of beneficial insects in the garden, which feed on beech wool aphids. Hang insect hotels for ladybugs, lacewings, and hoverflies near endangered beeches.
Tips
Beeches are more likely to suffer from Fungal diseases. These occur more frequently when the weather is too wet or too dry. Fungal infestation only needs to be treated in young beeches.
