The wire can come in various sizes, from thin wires suitable for small dwarf seedlings, to thick wire designed for outdoor trees. Knowing which type of wire to use can be one of the most challenging aspects of bonsai tree design. If you do not have wire that is strong enough for your size of tree, it is very easy to rectify. These types of bonsai sales are usually where you can get the best prices on high quality bonsai supplies and plants. This is the type of bonsai sale that you want to take advantage of, as these high quality Japanese bonsai supplies will last a lifetime if properly cared for. This is important, as knowing your equipment is key in using it properly. If you want to use soils prone to breaking apart or decomposing, such as organic soils, you will need to make certain that the tree you use this soil type with is able to handle root bearing at least once or twice a year. One of the most popular types of bonsai soil available on the market is inorganic soils. As bonsais are considered a work of art, growing bonsai is part skill at keeping plants alive, and part artistic talent. When you are growing bonsai for the first time, you will want to approach aspects like wiring with caution. When growing bonsai, the wires should be placed on the tree in such a way that it causes bending without gouging or breaking the branch. For the professional bonsai tree grower, the trees are works of art that can last for hundreds of years if cared for properly. If you are interested in growing bonsai trees, there are several things that you should keep in mind. Many of the types of trees suitable for growing in the bonsai style do not thrive well indoors. As the trunks of the tree have a layered appearance from the aerial growth of roots, it is not uncommon that designers will use this characteristic of the plant as a fundamental part of the finished piece. The aerial root system, if properly controlled, can enhance the appearance of the bonsai without risk of spreading beyond the confines of its pot or causing root problems in the pot itself.