A red color on the tree trunk can have different causes
Basically, the red color alone is not a sufficient indicator for an accurate statement about the health of an apple tree. While the red colouration occurs over a large area, reasons such as the clutches of blood lice can be ruled out, but other phenomena and Fungal diseases
be the reason for a noticeable red color on the trunk. Take a close look at the bark and determine whether the red color is only punctiform or flat and thin. While the former would speak for the red pustular mushroom, the latter rather indicates so-called green algae.
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The red pustular mushroom is not to be trifled with
The discoloration caused by the red pustular fungus initially only appears as inconspicuous points on the trunk bark. The hose fungus from the order of the spherical crustaceous fungus-like and is quite a threat to be taken seriously
Tree health. If you don't take action against it, it will soon reveal its fruiting bodies in more and more places on the apple tree trunk. Fungicides show only inadequate action against it, even in commercial cultivation. Since the fungus drains the strength of the apple tree, infected areas should extend into the healthy wood cut back and the material is disposed of far away from the apple trees. The following work steps are necessary:- Determination by a garden professional
- Remove the affected branches and trunk
- Proper disposal of the infected wood
- Wound care as protection against recurrence Fungal attack
The harmless explanation: green algae
It sounds a little hard to believe, but in fact, improved air quality and fewer pollutants in the air are in favor Responsible that meanwhile more and more trees in the garden are turning red in the form of so-called green algae (Trentepohlia umbrina) appear. This color may seem a bit dangerous at first glance, but green algae are not considered to be on the trunk bark illness because they do not cause any damage to the tree. If you want to remove the algae for visual reasons, dispose of them with a brush removed parts of the algae carefully, otherwise these can be even more pronounced on nearby tree trunks overlap.
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Occurs the red coloration of the Tree bark along with stunted growth and other symptoms, can also be a problematic one Location with wrong soil being the reason for it.