Orchids are renown for its beautiful flowers and among one of the most popular within ornamental plants. Like other plants in general, orchid is not free from pests and diseases. Pests and disease may decline its vigour or even causes serious damage to orchid plants. In practice a high standard of house keeping in a greenhouse is important to avoid the loss of precious orchid collection. The presence of some pest and its treatment in orchid green house in Bogor Botanic Garden is reported in this paper.