Phalaenopsis orchids are one of the most profitable potted crops produced worldwide because they have the longest flower life. These orchids are also known as moth orchids. Large-scale production of these orchids occurs in the Netherlands, China, Germany and Taiwan. These species generally grow in monsoon areas and have an adaptation to dry and wet cycles. These species have a lithophytic and obligate terrestrial habitat of arboreal species of Esmeralda and Phalaenopsis amabilis subsp rosenstromii. They are found throughout tropical Asia and on the islands of the Pacific Ocean. In the north they exist in Taiwan, the Philippines and China. Their distribution extends to southern India, Sri Lanka, Australia and Papua New Guinea. These orchids generally grow in regions where the ambient temperature is above 280°C. The roots of Palaenopsis exist in three types: epiphytic, substrate, prostrate and aerial. The leaves of this species are fleshy and succulent in nature. These higher temperatures generally inhibit the flower initiation process. Night temperatures ranging from 250°C during the day to 200°C at night initiate flowering. In vitro acclimation is controlled by relative humidity and is the main factor involved in altering the morphological, physiological and biochemical characters of plants that are transferred in vivo. The goal of the current project is to understand whether night or day temperatures influence the flowering mechanism of the Phalaenopsis orchid. The Orchidaceae family is the largest angiosperm family, containing approximately 25,000 species distributed across 859 genera. These orchid species are available worldwide except Antarctica and elevated habitats with steeper slopes. Cymbidium, Oncidium,...... middle of the paper...... is the flower formation. These types of strategies used by many farmers have a major economic impact since most of the energy to maintain the greenhouse is produced during the night. Further research developments in this area are needed to link minimal daytime exposure and intensity of higher temperatures in inhibiting the flowering process. Flowering time is below 230°C, but the number of buds per plant and inflorescences is low at cool temperatures. Works CitedWang, YT. Temperature during the day, but not during the night, controls flowering of Phalaenopsis orchids Journal of Experimental Botany (2006) 15.15: 4043-4049.Suriyan, Cha-um.Effects of temperature and relative humidity during acclimation in vitro, on the physiological changes and growth characters of Phalaenopsis adapted to the Australian Journal of Crop Science in vivo (2010) 4.9: 750-756.