Actually, harlequin willows are not very susceptible to diseases by nature. Nevertheless, parasites or pests like to spread on the ornamental tree and sometimes cause great damage. In this case, it is important to act quickly. Early detection of symptoms is the be-all and end-all. On this page you will find help if you are unsure which pest it could be. Of course, you will also learn how best to take action against the parasite.
The willow leaf beetle looks pretty but can cause a lot of damage
Common Pests
- the willow leaf beetle
- rust
- Willow Anthracnose
The willow leaf beetle
The willow leaf beetle leaves strong feeding marks on the pasture. In the case of a severe infestation, it even eats all the leaves, so that the sapling eventually wilts. You can also see its orange colored eggs, which it lays on the leaves.
When it comes to treatment, prevention is the best medicine. Check the ornamental willow regularly to detect the pest at an early stage and prevent the worst. Although fungicides help with advanced infestation, you should still rely on natural means. Trust nature, because birds like to eat the beetle from the leaves.
Once the willow leaf beetle damages the appearance of the tree, the harlequin willow will usually recover from the infestation after some time.
fungus
Rust and willow anthracnose are two species of fungi. You can recognize the pests by the fact that shoots, branches and leaves of the harlequin willow turn brown or black. Similar to the willow leaf beetle, the diseases can be treated with fungicides and prevention of an outbreak. It is imperative that you completely remove diseased branches.
Important tips
- Never dispose of the cut branches in the compost.
- First check the pasture for care errors such as watering, fertilizing, cutting and location.
- Use chemical agents only in extreme emergencies.