The Shito size of bonsai trees is the smallest category, ranging from 2 to 4 inches in height. These miniature trees are also known as "thumb" bonsai, because they can be held in the palm of a hand. Shito bonsai require careful attention and maintenance, as they are more vulnerable to environmental stress and pests. They are often grown in shallow pots or trays, and need frequent watering and pruning. Shito bonsai can be created from various species of trees, such as maples, pines, junipers, and azaleas. They are admired for their delicate beauty and intricate details.