The Phalaenopsis orchids grow well near bright windows, with no direct sun light. In dull, northern winter climates, a full south exposure may be required.
Artificial lighting is acceptable.
In a greenhouse, heavy shade must be provided to allow 800 to 1,500 f-c of light. No shadow should be seen if you hold your hand one foot above the plant's leaves. If leaves are hot, reduced light intensity. Although higher temperatures result in fast leaf and root growth, lower light and air movement must accompany. Do not exceed the limit of 95 F. Temperatures below 78 F for three to five weeks with good light are needed for initiating flower spikes.