Bonsai can be displayed indoors for a few days . Non-winter hardy species such as gardenia, snow rose, citrus and buttonwood must be brought indoors before autumn frost and kept in a cool room with ample light. Avoid hot rooms and locations near heaters. Bonsai thrive better when kept on shallow trays filled with gravel and water to provide extra humidity. Bonsai should be misted and checked for water daily.
Frequency depends upon the type of plant, soil, etc.
The amount should be sufficient to run through the drainage holes of the container. Daily inspection will indicate if pests are present. Spray at full strength with pesticides recommended by a local garden center. County extension agents are helpful in determining correct pest identification and proper control. Spring is the optimum time to transplant before the new growth begins.