What keeps a bonsai small?

TreeBay

Trees continue to grow throughout their lives; however, the growth of a bonsai is regulated by several factors

1. Plants grown in containers tend to grow more slowly than those that are planted in the ground. Most bonsai if planted in the field and properly maintained would rapidly lose their dwarfed characteristics and grow into a full-sized garden trees or shrubs. The container places a physical limit on the growth of the root system, which in turn limits the development of the portion of the tree above the soil.

2. Bonsai are trimmed periodically to maintain their silhouette and to shape their branches in an aesthetically pleasing way. By doing this the bonsai artist is making the tree smaller, but what makes the tree a bonsai is that the careful pruning that is used trains the tree to have the same visual cues that the viewer is used to seeing in large landscape trees.

These same trees planted in the ground might have a shrubby or rangy appearance, but when cultivated as bonsai, the artist can develop the graceful forms of a mature landscape tree and impress that appearance on a tree that is only a few actual years of age.

Plants grown in containers tend to have smaller leaves and internodes, and these characteristics can be further emphasized by periodic pinching of new shoots and reshaping.

In this way the paradoxical illusion of a miniature tree is created.

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Gary Biggs

Thanks, Treebay. I thought bonsial was telling me a whopper. He said it was because of the trolls living in the soil. Again, thanks for clearing this up for me.

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