Phalaenopsis, also known as moth orchids, are a popular type of orchid. They are easy to care for and have long-lasting blooms. Phalaenopsis thrive in humid environments with temperatures ranging from 65-85 degrees Fahrenheit. The minimum temperature for Phalaenopsis is 50 degrees Fahrenheit. If the temperature drops below 50 degrees, the leaves will start to turn brown and the flowers will fall off.