Phalaenopsis – Commonly called the Moth Orchid, Phalaenopsis is most commonly hybridized with Doritis. This group flowers in the spring and will provide you with blooms for three to six months!
Light: Provide less light for Phalaenopsis than for cattleyas and dendrobiums. A shady, screened patio is good, no direct sunlight.
Temperature: Nights above 55* F. Day temperatures below 90* F. Keep warm during cooler winter nights – cold air will blast buds. A 20 degree day/night differential is necessary to initiate spikes.
Water: Water thoroughly, but do not allow to become completely dry between watering. By picking up the pot you can tell by the weight whether the plant needs water. Keep slightly moist. Be careful to avoid getting water in the crown of the plant – do not expose to rainfall. Water early in the day to allow the plant to dry out before nightfall.
Fertilizer: Fertilize during the warmer months with any good orchid fertilizer. “Weekly – weakly” each week with a 1/4 strength solution. Supplement with Nutricote time release fertilizer.
Potting: Phalaenopsis love to be repotted. Try to repot phals every year. It is best not to repot during intense heat.
Additional resources:
Growing the best Phalaenopsis part 1