Bonsai is a very fascinating art form, combining both design and science. When designing Bonsai the grower has to take into account that the tree needs to stay alive. Providing the tree with the best environment to continue to mature, giving the Bonsai more character as it ages.
Another interesting Bonsai is the tropical African Jade 'Elephant Toes'. This tree has been in training for 3 years, starting from a cutting it eventually was trained to grow root over the rock style. Using only organic gardening techniques, I think, get the best results. For more organic gardening tips. With out the harsh chemicals it helps keep the indoor environment healthier.