The browning of the leaves in winter is a completely natural process for the hornbeam. They dry up in autumn, but stay on the tree for a long time. It is different when the hornbeam gets brown leaves in spring or summer.
Brown leaves outside of the fall season are signs of disease or deficiency
Causes of brown leaves on hornbeams
- Hornbeam is too dry
- Location too humid
- fungus
- brown leaves in winter
Fungal infestation is common. This can be the leaf spot fungus, which is noticeable by small yellow and brown spots on the leaves.
Powdery mildew can also lead to brown leaves if a heavy infestation is left untreated.
In dry summers, you should occasionally water younger hornbeams to prevent the trees from developing brown leaves.
tips
Hornbeams can cope with very dry soil for a short time, but also with flooding. If the phases last too long, the leaves turn brown and the tree dies.