Since natural shapes are on the rise, the multi-stem tree is a growing trend. Actually, the traditional clear stem tree with its straight trunk and a crown of at least two metres, is unnatural. In nature, if wild animals have not eaten away at them and they are not located in a dark forest, trees have branches much lower down their trunks. However, we shall continue to cultivate clear stem trees because they are needed along streets and pathways to allow us to walk under them. Avenue trees also have the property of keeping the view open which is desirable in the city. In places where the greenery is allowed to retain a more natural form, lower branched or multi-stem trees can be planted. Low branched trees, also known as feathered trees, have a single vertical trunk too, but feature lateral branches from the ground up. The bottom of this kind of tree is often its widest part. During cultivation, a multi-stem tree is pruned at an early age so that several trunks grow next to the ground. Multi-stem trees usually have a vase-shaped crown structure: slightly narrower at the bottom become wider further up.