AOS Phalaenopsis Culture Sheet Phalaenopsis Phalaenopsis the moth orchid, is one of the best orchids for growing in the home, and is also a favorite with greenhouse growers. Culture for Doritis, a related genus, and Doritaenopsis, a hybrid between the two genera, is the same as for pure Phalaenopsis. They grow easily in a bright window, with little or no sun. In dull, northern winter climates, a full south exposure may be needed.
Artificial lighting is excellent.
No shadow should be seen if you hold your hand one foot above the plant's leaves. 90 to 95 degrees F. Night temperatures to 55 degrees F are desirable for several weeks in the fall, in order to initiate flower spikes. Fluctuating temperatures can cause bud drop on plants with buds ready to open. Because they have no major water-storage organs other than their leaves, they must never completely dry out. Plants should be thoroughly watered and not watered again until nearly dry through the pot.