How to recognize and treat them

Maple Wrinkled Scab - Recognizing and Treating Signs

One of the most common tree diseases on the maple is aptly named after the tree. The pathogens of Ahornrunzelschorf have specialized in the genus. Due to the unmistakable damage pattern, the infection is also referred to as tar stain disease. How to diagnose and combat that Fungal attack:

• Shiny black, yellow-rimmed, slightly raised spots on living leaves
• Premature leaf fall in summer
• Control: collect all leaves in autumn, burn them or dispose of them in household waste

If you interrupt the development cycle of the fungal spores by carefully removing the leaves, your maple tree will be spared the disease in the following year.

Identify and combat red pustel mushrooms - this is how it works

The unmistakable fruiting bodies only reveal one of the most common tree diseases in autumn and winter. Long before that, the pathogens causing red pustule disease were caused by errors in the

care weakened maple tree nested. How to track down the fungal spores:

• Wilting leaves and drooping shoots in spring and summer
• Unusual discoloration of the bark with subsequent cancerous growths
• In the cold season of the year, pinhead-small, vermilion-red fruiting bodies emerge

The pathogens have so far proven to be resistant to known fungicides. In field tests, tree disease experts found that cutting back into healthy wood deprives the fungal spores of their livelihood. The best time for the measure is on a mild, dry day between the beginning of September and mid-October.

Verticillium wilt - recognize symptoms and act correctly

For the fungi of the genus Verticillium, a maple is the most important host plant. Fatally, the pathogens penetrate the pathways through the ground, block the supply of water and nutrients, so that the affected maple tree is doomed to perish. Since the disease is extremely contagious, we recommend clearing the area immediately and then replacing the soil. You can recognize Verticillium wilt by these symptoms:

• Branches sprout normally in spring and show withered leaves out of the blue
• Previously firm, green leaves turn pale green and limp
• Ring-shaped, brown discolorations can be seen in cut, thicker branches

The partial occurrence of the symptoms mentioned is typical of Verticillium wilt. While no signs can be seen in one region of the crown, other areas gradually die off. On the basis of this spread in places, the disease can be easily distinguished from frost damage, drought stress or waterlogging.