I have learned from my teacher that importance to care bonsai is water, a fertilizer and a disinfection.
These helps bonsai to growing well.
Not only this, we treat them as to match Climate.
When it is summer season, you have to care to fit summer, when it is winter, you treat as they feel comfortable.
One thing you have to remember is when a tree is damaged, you have to care so so carefully.
In this column, I give you some information about how to care or my point.