I live in a state where I can grow apples, peaches and pecans, but not avocados, lemons, limes, oranges, tangerines or even grapefruits. So the idea came to me about growing them as indoor bonsai trees. Research indicates that others have already done this with great success. There does not seem to be many citrus or avocado bonsai trees for sale and if you found really good ones they would more than likely cost a small fortune to buy. Most of the lemon bonsai trees and their counterparts seem to be located in private indoor gardens cultivated by hand over the course of years. I believe that creating such trees would be a great business idea and from what I have seen the very best way to do that is to grow the bonsai citrus trees or bonsai avocado trees either from seed or a small purchased tree.