Most orchids require moist, well-draining conditions. There are several types of growing media that can be used with orchid plants—redwood or fir bark, sphagnum peat moss, rocks, cork, charcoal, sand, potting soil, etc. A basic mix for growing orchids consists of coarse perlite, fir bark, and sphagnum moss. You can also add charcoal but this is optional. Generally, the grade of bark is dependent on the type of orchid grown. For instance, phalaenopsis orchids are usually grown in coarse bark, cattleyas in medium bark, and young orchid plants are best grown in fine bark. Orchids require shallow planting. Place orchids in an east to south-facing window or room. These plants prefer bright, indirect light. Insufficient light results in poor flowering. However, too much light can lead to leaf scorch. Temperature is also important for indoor orchid care. While orchids tolerate cooler or warmer temperatures throughout their normal growing season, they need to be about 15 degrees cooler at night than during the day in order to bloom sufficiently.