tree surgeon shepshed tree surgeon loughborough 1.Tree pruning: Natural Target Pruning is the way a tree is pruned by a trained aborist. He/she uses specific methods to avoid placing the tree at any kind of danger, especially the dispersing of decay. Because that will distribute decay into different parts of the tree, one technique for instance, would be to prevent cutting the tree at its branch collar. Cutting on these parts could lead to a disease contaminated tree. A tree can die from poor pruning, so it's essential that tree surgeons are attentive.