Content
- The apple tree gets a red bark - what to do?
- A red color on the tree trunk can have different causes
- With the red-Pustelpilz is not to be joked
- The harmless explanation: green algae
- Tips & Tricks
The apple tree gets a red bark - what to do?
In recent years, in some regions, red coloration of the bark of apple trees is increasingly occurring. But it does not necessarily have to be the symptom of a tree-endangering disease.
A red color on the tree trunk can have different causes
Basically, only the red color alone is not a sufficient indicator for an accurate statement on the health of an apple tree. While in a large-scale occurrence of the red coloration reasons such as the Eiergelege of blood lice are rather ruled out, so can still other phenomena and fungal diseases
the reason for a striking red coloration on the trunk. Take a close look at the bark and determine whether the red coloration is only spotty or rather flat and thin. While the former would speak for the red Pust fungus, the latter points more to so-called green algae.
With the red-Pustelpilz is not to be joked
The discoloration caused by the red pustular spleen initially appears only as inconspicuous points on the stem bark. The mushroom mushroom from the order of the crust ball mushroom-type and is quite a serious threat to the tree health. If you do not act against him, he will soon bring his fruiting bodies to more and more parts of the apple tree trunk. Fungicides show against him even in commercial cultivation insufficient effect. As the fungus wears out the power of the apple tree, affected areas should be cut back into the healthy wood and the material disposed of far away from the apple trees. The following steps are necessary:
The harmless explanation: green algae
It may sound a bit hard to believe, but in fact, improved air quality and fewer pollutants in the air are responsible for the fact that now in more and more trees in the garden red colors in the form of so-called green algae (Trentepohlia umbrina) occur. Although this color may seem a bit dangerous at first glance, green algae on the stem bark are not classified as an illness because they do no harm to the tree. If you want to remove the algae for visual reasons, so carefully dispose of the removed with a brush algae parts, otherwise they can all the more on nearby tree trunks overlap.
Tips & Tricks
If the red color of the tree bark appears together with stunted growth and other symptoms, a problematic location with a false bottom can be the reason for this.