Bonsai, as a Japanese art form, is more regulated than its Chinese counterpart, the penjing. Bonsai attempts to achieve the ideal tree, while penjing attempts to reproduce nature. This is why perfect styling exists in bonsai if you obey the rules, while penjing leave you free to your creation. As a result these are the basic styles :
Broom (Hokidachi or Hoki-zukuri)
A very harmonious style, this form has branches that develop at a certain height, forming an upside broom. This styling is mainly achieved through a technique called the V cut. The trunk is chopped where you want the branch to start to develop and then a deep V cut is performed on the remaining trunk. This will induce buds to break near the cut. Zelkova serrata are notorious for this styling but maple and other deciduous species can easily be styled that way.
Formal Upright (Chokkan)
A tree styled the chokkan way has a straight trunk tapering graciously from bottom to top. The first and biggest branch is often situated at 1/3 of the desired height of the tree and is on the right or the left. The following branch is situated on the opposite side, while the third is in the back creating...