A bonsai tree can create excellent feng shui energy/associations for one person while for someone else a bonsai tree can be bad feng shui/create bad associations. The symbolic level of feng shui comes into play when you have to trust your own feeling about a specific item in your home, be it a bonsai tree or a colorful painting. This is not to say that there are no specific guidelines, or rules when it comes to the use of feng shui cures.
Some of the rules in the feng shui world are very clear, and some are open to interpretation. For example, the rule about clutter being very bad feng shui is a very clear rule, as well as the rule about the importance of having a strong and powerful front door.
When it comes to the feng shui of bonsai trees, you are entering the territory of "I know what they say, but this is up to me feng shui." And rightfully so. It is your home and your energy, so it is up to you to decide what best nourishes you at this time. Here are the main feng shui guidelines for the use of bonsai trees; be sure to follow your own intuition.
Bonsai tree plants can be fascinating because you are basically looking at a whole tree in a miniature version. Bonsai come in all shapes and sizes, from one upright tree to a small forest of mostly horizontal shape trees. Many trees and shrubs are trained to grow in a miniature form, from California redwood to cypress and juniper. At their best, the bonsai trees are a beautiful work of art that requires patience and sensibility; at their worst, they can be an eyesore and a source of pain if neglected.
The best placement of any feng shui cure is defined by its feng shui element and the correspondence with a specific bagua area. A bonsai tree obviously belongs to the feng shui element of Wood, so place it in a bagua area that is either defined by Wood (East and Southeast) or nourished by Wood (South).
In the Office
You can certainly have a bonsai in your office if the look and the feel of a bonsai tree speak to you. Be mindful of the fact that there are better choices for feng shui plants for the office; so be sure you make the best choices to support your well-being and success at work.
As you can see, it is up to you to honestly evaluate your own feelings about having a bonsai tree in your home. It might be an excellent feng shui choice for you if you love it and take good care of it. It might speak to you of patience, order, the need to control, etc.
There may be other associations that come to mind, too. Confinement, limited growth, and root pruning are all used to create bonsai trees. Even though an old art that is said to promote mind cultivation and training, as well as an aesthetically pleasing view, bonsai trees may not speak to you.