The spherical maple is very popular as a decorative design element for front gardens, driveways and avenues because it is both beautiful and easy to care for. However, the noble variant of the Norway maple is not completely immune to diseases. Read here which diseases can occur and how ecological control works.

To combat tar spot disease, it is enough to remove all affected foliage

Tar spot disease spoils the leaves - tip for combating it

At the beginning of summer, mischief begins in the form of yellow spots that spread across the beautiful leaves. As the tar spot disease (Rhytisma acerinum) progresses, the spots turn black, which is where the name of this fungal infection comes from. Typically, the yellow edge of the tar spots remains until the bitter end, because the affected leaves fall to the ground far too early.

You don't have to bring out the chemical club for a successful fight. By meticulously removing and burning all foliage in the fall, the fatal development cycle is interrupted.

Red pustule disease - debilitating parasite with a conspicuous appearance

Red pustule disease (Nectria cinnabarina) is one of the most common infections in maple trees. The vermilion red pustules spread across the shoots and bark, which cannot be overlooked. If no countermeasures are taken, cancerous deformations can form because the pathogens release toxic substances into the pathways. How to act correctly:

  • In dry weather in September, cut back all shoots down to healthy wood
  • Cut at least 15-20 cm below the infestation and do not leave stubs

Then put the care and site conditions to the test. A maple tree that has been weakened by care mistakes is a welcome victim for the pustule fungus.

Powdery mildew beats milk - this is how it works

If the leaves on the maple are covered with a mealy-white patina, you are dealing with the widespread disease powdery mildew. An effective control agent can be found in your refrigerator. Fresh milk contains valuable lecithin and microorganisms that put an end to fungal spores.

A mixture of 1 liter of water and 125 milliliters of fresh milk (no UHT milk) has proven effective. Cut off all infected plant parts in advance. Then spray the entire crown repeatedly with milk-water until dripping wet.

tips

Clippings and fall leaves from diseased maple trees should not be disposed of on the compost heap. Fungal spores use wind and rain to make their way back into the garden. Suspicious plant remains are burned or disposed of in the dustbin.

Category:

Trees