Brown spots on the leaves of the medlar are dreaded signs of damage that are not only caused by diseases and parasites. They can expand greatly and lead to the death of the leaves. The damage can be prevented by simple measures.
Brown spots can be an indication of a fungal infection
diseases and parasites
Glossy medlars are infested by parasites such as aphids. A heavy pest infestation causes discoloration and spots to form on the leaves. Remove the affected leaves and cut fully infected shoots back into the old wood. Actively combat aphids with a solution of water, rapeseed oil and soap. Spray the entire plant with the remedy.
The spores of various fungi spread in the air in wind and rain and prefer to settle on the leaves of the medlar. They are the cause of leaf browning. You don't have to remove the affected leaves. Spray the entire plant with a solution based on copper sulfate. As a preventive measure against fungal infestation, you should regularly water your medlar with a plant strengthener. A decoction of nettle, wormwood or garlic supports the vitality of the plant.
Cool location in winter
If the container plant is too warm in winter, the leaves will get brown spots. The plant needs a cool location with wind-protected conditions. A spot on the balcony right next to the wall of the house is ideal. Shrubs and hedges growing in open ground need to be insulated from frost.
The optimal protection for outdoor plants:
- Press bamboo sticks into the ground around the trunk
- Wrap wire around the sticks
- Fill the fall leaves in the gap
Sheltered location in summer
Warm summer winds cause the plant to lose a lot of water. The dry air absorbs the moisture that the leaves exude. If she cannot meet her water needs, the leaves tend to turn brown. These symptoms are weather related and reflect the drought stress the plant is experiencing.
Both potted plants and outdoor shrubs like a wind-protected location. Place potted plants in a spot that offers protection from direct sunlight. When planting shrubs in the garden, make sure they are in a bright location with indirect sun. If you water the plant regularly, you prevent drought stress.