The ficus bonsai is among the most popular bonsai for beginners. It is an incredible tree for indoor bonsai. There exists various ficus bonsai species. Species like Ficus Ginseng, Ficus Retusa and Ficus Microcarpa are the most in demand. The ficus species have oval shaped dark green leaves. Different varieties have different trunk shapes. Sometimes the trunk is thick and has a s-shape, sometimes it is potbellied or ginger shaped.