The apex of a bonsai tree is the highest point of its trunk and branches, where the foliage forms a rounded or triangular shape. The apex is an important element of the bonsai's design, as it reflects the tree's style, age and character. The apex should be balanced with the rest of the tree, neither too heavy nor too sparse, and should create a sense of harmony and continuity. The apex should also be slightly tilted to one side, to avoid a symmetrical and unnatural appearance. The apex can be shaped by pruning, wiring and bending the branches, depending on the desired effect and the type of tree.