Discoloration of the branches or withered, brown leaves indicate a disease in the willow. Fungi are often the trigger. Fortunately, the deciduous trees recover from the infestation with appropriate measures. The prerequisite for this, however, is that you interpret the symptoms correctly and act quickly and purposefully. On this page you will acquire helpful knowledge to take effective action against parasites.
Mushrooms should be removed as soon as possible
Common fungal diseases
- Marssonina disease
- Anise Tramete
- anthracnose
- Blushing Tramete
- Sulfur Porling
Marssonina disease
Marssonina salicicola, the fungus that transmits Marssonina disease to pasture, feels extremely comfortable in humid weather and warm temperatures. To the chagrin of many gardeners, it is also very cold-resistant and therefore likes to overwinter on deciduous trees. In the spring, the fungus multiplies and causes the following symptoms:
- dark necroses, about 3mm in size, on the leaves
- crippled leaves
- dried leaves
- premature leaf shedding
- Peak drought (dieback of the shoot tip)
- Bush encroachment on the dead spots
Numerous species of silver willow and hanging willow are particularly susceptible to the fungus.
By thinning out the crown, you improve air circulation and eliminate the humidity that is favorable for the fungus. Affected branches should be severely cut back. As a preventive measure, you should always collect fallen leaves.
Anise Tramete
If you notice a strong smell of aniseed near your pasture, the fungus Trametes suaveolens has probably taken root. Its symptoms only appear on the trunk of the tree. It lays its fruiting bodies on the wood during the winter months of December and January and causes white rot.
To be sure that it is the fungus mentioned, you should consult an expert. They can give you helpful tips for treatment.
anthracnose
This fungus affects leaves and branches of the willow tree. The following symptoms indicate an infestation:
- brown spots on the leaves
- Bark lesions on young shoots
Blushing Tramete.
If the tree trunk and the branches of the willow have brown, flat fruiting bodies, you must assume an infestation of the blushing Tramete. In particular, superficial injuries such as bruises in the wood favor the onset of the disease.
Sulfur Porling
You can recognize this fungus by orange or yellow spots on the trunk and branches of the willow