Pruning (tree care)

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Cutting is called the execution of the cut when removing a branch. The incision should be chosen so that the tree interface optimally foreclose and by the formation of callus , the injury can as quickly as possible to reseal. The creation of supply shadows should be avoided as far as possible.

Cutting guides according to the branch connection

Farewell collar on a dying branch
  • Cut living branches with ingrown bark: cut the branch as close as possible to the trunk, but outside the bark ridge. The trunk must not be injured;
  • Cutting of living branches with astring: cut outside of the astring, the astring must not be damaged;
  • Cut of living branches without astring, but with a branch collar or astringent bark: cut outside the branch collar, between the branch cross-section and the course of the trunk;
  • Double trunk ( Zwiesel ): trunk forks should be removed as early as possible, the cut is made outside the branch collar. Branches or stems over 10 cm in diameter should not be removed if possible. The incision should be based on the angle to be observed when cleaning branches.

The most important points at a glance

  • No cuts parallel to the trunk
  • Avoidance of major wounds
  • If an astring is available, it must be cut outside the astring
  • The trunk tissue above the branch base must not be damaged
  • Astring must not be cut off.
  • Avoidance of supply shadows
  • no stub cut
  • Branches must first be roughly shortened with an undercut and an overcut to avoid the uncontrolled breakout of the branches (relief cut)

Stark branch cut

The pruning or removal of branches with a diameter of more than 10 cm. Strong branch incisions should not be performed at all without necessity, since large wounds are more exposed to the risk of infection with pathogens. One consequence of this is, in turn, the creation of large septic caverns. In particular, cuts in large branches on the main trunk have negative consequences: supply shadows are created below the cuts . Due to the changed physical properties, longitudinal tears can occur near the wound. The remaining life of the tree is greatly reduced, the breaking strength is reduced. Stark branch cuts are often performed in ignorance of the serious consequences. Often trees are pruned too far for no reason. In some cases, large branches are removed directly from the trunk in the course of a belated clearance profile cut. The trees usually react more intensely to the leaf mass removed in this way with new shoots that have to be thinned out within a few years. Because of the expected consequential damage, the ZTV Tree Care recommends only reducing thick branches when cutting the clearance profile. Strong branch cuts may only be carried out if they are necessary for reasons of traffic safety.

Deriving on supply branch

In the case of shortening, the tension should be cut. The diameter of the tension should be a third of the branch to be shortened at the cut if possible.

The cutting thickness indicates the diameter of the branch to be cut. Branches over 5 cm (or 10 cm) in diameter should only be removed with justification, i.e. if it cannot be avoided for safety or other reasons. Basically, all interventions should be as minimal as possible and the wounds should be kept as small as possible.

Fine and fine knots (knots less than 3 cm in diameter) must not be cut with a chainsaw. Cuts are to be made in a straight line. The wood mesh must be trimmed with a sharp tool. Smooth cuts (which are also possible with new branch blade saws) promote overflow. The chainsaw is usually only required for questionable trees.

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