Bonsai trees have been grown as garden plants for many centuries and are in essence beautiful miniaturized versions of the larger trees which are planted in pots and containers which restrict the root growth. These type of plants can be of any variety of trees or even shrubs and in many countries are readily available from bonsai specialty stores or nurseries. Beginner bonsai trees are starter plants that have already been processed in such a way so that they are ready to be used for your design or your training needs. Starting off a bonsai growing training will need you to first get a handle of what would be in store during training.