With encrusted shoots and diseased leaves, a Norway maple does not keep what its profile promises. This guide explains how to repair disease damage to Acer platanoides with simple remedies.

Wrinkle scab affects the Norway maple most often

Maple wrinkle scab - tips for diagnosis and control

Two species of sac fungi have specialized in Norway maple and its big brother, the mighty sycamore. The symptoms are obvious and fighting it is very easy. How to diagnose maple scab and dismiss the disease:

  • Black, shiny, 1-2 cm large spots with a yellowish border
  • Later, premature leaf loss in summer
  • Treatment: Collect and dispose of all autumn leaves

The fungal infestation is also known as tar spot disease and is widespread. You don't have to resort to chemical tricks to combat it. The infectious spores for a new infestation only appear when the leaves have fallen to the ground. By removing all leaves from the garden, you break the vicious cycle.

Red pustular disease - recognize the signs and act correctly

Chemical fungicides are powerless against a frequent fungal attack on Norway maple and its cultivar spherical maple. Despite all this, you don't have to give up your magnificent Acer platanoides, because you can heal the tree with a simple method. Typical indicators and the best way to combat them can be found here:

  • Early stage: signs of wilting on leaves and shoots in spring and summer
  • In the further course often cancerous deformations of the bark
  • Late stage: Numerous, 2 mm small, vermilion fruiting bodies on the branches in winter

Red pustule disease is one of the few reasons that make pruning unavoidable on Norway maples. Years of observations and field tests confirm the scissors as an effective tool of control. If you cut all infected branches back into the healthy wood in September, the insidious fungal spores will lose out.

Supplement the healing pruning with an organic nutrient supply to boost immunity. Work in the mature compost and horn shavings (€32.93) superficially with the rake and shower everything with potassium-rich comfrey manure.

tips

The third type of damage in the series of common diseases has its fatal beginning on maple roots. Norway maple weakened by an unsuitable location or care failure is susceptible to Verticillium wilt. Successive parts of the crown die off until the entire tree is just a pile of dead wood. So far, scientists have been searching in vain for effective healing methods.

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Trees