Ban or Bankon
Ban or Bankon (晩}) is a term used in bonsai to describe rock-like roots that are formed when two or more roots are knit together on the topsoil. These roots are called bankon and they are often seen in deciduous trees, such as ginseng ficus or jade tree. Ban or Bankon roots create a certain aesthetic and can be used to achieve the pillar style or the root-over-rock style of bonsai.