The University of Kentucky recommends putting the orchid in an east, west, or south window. They say that this is good for most orchids because they like bright light and warmth but prefer cooler temperatures at night than most other flowering plants require. Orchid varieties differ in their range of light, heat, and humidity requirements. Some, such as African vanda flowers (Vanda meriana), prize the humid climate of an indoor bedroom or bathroom for most of the year. Others can grow outdoors in mild temperatures with light shade. The ideal placement for an orchid depends on its type, so it's important to know what your variety prefers before choosing a location. Here are some general rules: In warmer weather, find a shaded area with partial sun exposure; if night temperatures fall below 50 degrees Fahrenheit, find an even cooler spot with plenty of shade and protection from the midday summer sun until early evening. In cooler regions, plant them in full sun with adequate drainage and plenty of air circulation.