The reason for increasing popularity is due to limitations of time, space and finances that fans and enthusiast encounter. And it is understood that to grow bonsai well you must have at least one of the following, time space and money. But beside the Shohin exhibition which is popular for small sized trees, there are plenty of others around the world for different types of sizes as well..the basics are simple, the smaller your apartment the smaller the bonsai. I would suggest Omono to start with a good type of maple. Here are some important ones:
If you ever wish to take part in an exhibition, please take note of common names for bonsai size classes as it is important. Not every exhibition will offer to view all size classes.
That is to say, trees are not able to repair damaged tissue, instead they continue to manufacture a new layer of cells with each years growth, until the wounds is entirely covered over. The length of time this healing process depends upon the size of the wound and the overall size of each new annual growth ring.