Possible causes of brown leaves
- wrong location
- Diseases and fungal infections
- Peak drought
Wrong location
You shouldn't be too worried that the leaves of your harlequin willow are turning brown. Mostly there is a simple maintenance mistake. The wrong choice of location, for example. The tree does not tolerate waterlogging, but persistent drought also damages it. Is your harlequin pasture possibly too sunny? Or are you not watering your harlequin willow enough?
also read
- Harlequin willow leaves curl - causes and treatment
- Brown leaves on the Japanese willow
- What to do when the harlequin willow dries up?
Diseases and fungal infections
Only when you can rule out the above mentioned care mistakes should you consider an illness. A common parasite is the Willow Borer. The white or dark red larvae are easy to recognize due to their size up to ten centimeters in length. If you discover the willow borer on the wood of your harlequin willow, you need to act quickly. Because an excessive infestation causes the tree to die off in a short time. Cut the harlequin willow back enough to remove all infested branches and burn the cuttings immediately.
Peak drought
The peak drought is a natural feature that is particularly evident in the summer months. Towards the end of the branches growth is stunted. The plant lacks the strength to supply its leaves with sufficient nutrients. A strong pruning strengthens their capacities.
