LIGHT
Be careful not to give too much sunlight. Bright light is important, but too much sun will burn the leaves. Windows are ideal for light, but a screen patio might be too much for them. In a greenhouse, only 15% to 30% full sun is advised. If you are uncertain of how much light they are getting, feel their leaves when they receive maximum light. If they feel very warm, move them to a lower light environment.

WATER
Phalaenopsis do not have water storage capacity, so do not let them dry out completely. Mist orchids in the morning if the air is dry. A humidity of 50% to 80% is desirable. Seedlings need a more constant supply of moisture. Do not let water stand on the leaves overnight or for any length of time, since this encourages leaf rot and fungus.

FERTILIZER
Potting media provides very little nutrients, so a regular fertilizing schedule is essential. In the summer, use a balanced blend of 20-20-20 or even a higher nitrogen formula such as 30-10-10. In the fall, or when the blooming cycle begins, use a bloom booster such as 10-30-20 every other time you fertilize with the regular formula. During the cool winter months or when the plant is resting, less fertilizer is needed.

POTTING
Phalaenopsis do not like to dry out, so potting medium must retain moisture at all times. The use of plastic pots help keep the mixture from drying out too fast. A fine mixture of tree fern, charcoal, bark, and sphagnum moss will keep the roots evenly moist between waterings. Avoid heavy, airless mixtures that prevent ventilation of the roots and good drainage.