Encouraging Bougainvillea Bonsai to Flower can result in beautiful year long purple, pink or red flowers. This is impressive in itself, on a bonsai tree it can be breathtaking.
Lighting is a Big factor in encouraging your Bougainvillea to Flower
Bougainvillea love light so the more light the more vigor the plant will have all around. In order to flower they need to get at least 6 hours of sunlight a day. Twelve hours a day would not be to much.
Fertilizing to Encourage Flowering in your Bougainvillea