Images and content taken from from "Bonsai Techniques I" by John Yoshio Naka under express permission from the author. Dallas Bonsai holds all content and material rights reserved. © 2001 DallasBonsai.com.
The forest style looks a lot like the multi-trunk style, but the difference is that it is comprised of several trees rather than one tree with several trunks. The most developed trees are planted in the middle of a large and shallow pot. On the sides of the pot a few smaller trees are planted to contribute to one single crown. The trees are planted not in a straight line but in a staggered pattern, because this way the forest looks natural.