White-gray fluff on the leaves indicates fungal infestation
What a horror when the distinctive pinnate leaves on the ash maple are covered with a whitish-gray coating. If the fluff can be wiped off with your fingers, there is no longer any doubt about the cause of the problem. Real one mildew is one of the most common Diseasesto complain about about the Acer negundo and its beautiful varieties. How to fight the fungal attack:
- Cut back infected parts of the plant into healthy wood
- Dispose of infected leaves and shoots in household waste or burn them
- Make a solution from 1 liter of water and 1/8 liter of fresh milk
- Add a few bits of washing-up liquid and fill into a spray bottle
also read
- Ash maple - cutting allowed
- Profile of the ash maple - maple with star qualities
- This is why a calamondin loses leaves - 3 common causes at a glance
Treat the entire tree with the milk water two to three times a week. In the early stages, the home remedy has proven itself to effectively combat powdery mildew.
Ahornrunzelschorf also speaks American
Ash maple's North American origins do not protect it from widespread maple disease. The symptoms look more dramatic than the disease actually is. How to recognize the infestation and react correctly:
- Slightly raised black spots with a yellow border appear on living leaves
- The affected tree ushers in an early autumn with massive leaf fall
The cause of the tar spot disease, as maple wrinkled scab is often called, are fungal spores from the group of hose fungi. Since the pathogens are only able to reproduce on the fallen leaves, you can prevent a renewed infestation with a simple measure. If you collect and destroy all leaves, the development cycle will be interrupted and your ash maple will be spared in the coming year.
Tips
There is little hope for an ash maple if leaves and shoots wilt in places, while neighboring regions of the crown appear healthy. This symptom is typical of the dreaded Verticillium wilt. the fungal pathogen attack the tree from the roots and clog the supply lines. The subsequent infirmity cannot be stopped by any known fungicides.
