The exotic window leaf inspires with monumental beauty and undemanding care. Irrespective of this, symptoms of disease such as yellow leaves or brown spots appear on Monstera species all of a sudden. Here you can find out exactly what causes these damage images and how the problem is solved.
Yellowing of the leaves is usually due to incorrect care
Mistakes in care cause symptoms of illness
There are no pathogens that are troubling your window leaf. This applies at least to yellow leaves, because this damage results from neglect in care. We have compiled the most common causes of the problem with hints for the solution for you here:
- Nutrient deficiency: From now on, fertilize every 2 weeks in summer and every 6 weeks in winter
- Drought stress: Dip the root ball in water once, then keep the substrate constantly slightly moist
- Waterlogging: Repot the window leaf promptly and water more moderately
- Leaf chlorosis: Immediately pour and spray with lime-free water
If light brown to yellowish spots with a dark halo spread out on the leaves, a fungal infection is often suspected. As a rule, the window leaf is sunburned if the location unexpectedly gets under direct sunlight. Since Monstera do not like a change of location, a curtain or awning should filter the sunlight.
Brown spots and brown leaves are alarm signals
If brown spots with a light halo appear on your window leaf, which spread and cover the entire leaf, you often have eye spot disease. This is triggered by the fungal pathogen Spilocaea oleagina. Please cut off all infected leaves immediately and dispose of them in the dustbin.
If the disease is not contained after this measure, counteract it with a fungicide. Copper-based control agents such as Atempo mushroom-free have proven to be effective in practice. So that the window leaf can better defend itself against the pathogens, strengthen the immune system with liverwort extract or horsetail decoction.
tips
Although diseases usually avoid the window leaf, this does not apply to pests. Spider mites, scale insects, mealybugs and mealybugs have their sights set on the mighty leaves, especially during the winter when there is dry heating air at the location. An effective prevention against the pests is regular spraying of the upper and lower sides with soft water.