- The beech aphid is the most common
- Signs of an infestation by beech ornamental lice
- How to get rid of pests on beeches
- Settle beneficial insects in the garden
There are only a few pests that really bother a beech. Predominantly young beeches can be seriously damaged by this, while older trees can usually cope with the plague on their own. The beech wool aphid is the most common representative. How to recognize an infestation and how to fight the pest.
Pest infestation is usually visible on the leaves in a timely manner
The beech aphid is the most common
The beech aphid is an aphid that lives mainly on the underside of the beech leaf. Although she has wings, she stays in the tree all the time.
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 an infestation by beech ornamental lice
An infestation by beech ornamental lice shows on the leaves. The leaves begin to deform. They curl up, dry up and fall off.
These signs can also occur with fungal diseases. Therefore, look under the leaves to see if mealybugs are sitting there and if the leaves are very sticky. Sometimes ant trails also run up into the tree.
How to get rid of pests on beeches
Beech ornamental lice are not easy to combat. They are trapped by the honeydew and cannot be removed by normal spraying agents.
- Cut off affected parts
- Apply insecticide
- Establish beneficial insects in the garden
If the infestation is low, cut off 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.
For heavy infestations, 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.
Settle beneficial insects in the garden
The best and healthiest control measure is to settle beneficial insects in the garden that feed on beech mealybugs. Put insect hotels for ladybirds, lacewings and hoverflies near endangered beeches.
tips
Beeches suffer more frequently from fungal diseases. These occur more often when the weather is too wet or too dry. Fungal infestation only needs to be treated on young beeches.