Guava tree becomes an excellent bonsai and doesn’t require too much care or maintenance. The guava is a tropical plant and therefore, it should be placed outdoors on a location that is sunny. If you live in a temperate region keep your guava bonsai indoors in winter. Use good quality bonsai soil mix composed of one-fourth part each of Akadama, Demolin Clay, Pumice, and Humus. Guava tree bonsai has moderate watering needs. The soil should never dry out completely otherwise the fine roots will die. Provide regular and deep watering when the tree is actively growing but reduce watering in winter. In fall, the tree must be monitored more closely and must be watered only if the soil dries out or leaves starts to wilt. Keep reading the tutorial in the source.