Use can be made of supplemental lighting during the growing and/or flowering phases to
promote growth and budding. Phalaenopsis must be active especially during the winter
months. 3,500-4,000 lux during 12-14 hours can be used as supplemental lighting. Please
ensure there is not too much light when the weather is sunny (light calculation). The damage
that may be seen is a reddish discoloration of the leaves, which would, in turn, lead to growth
stagnation. The plants must have a dark period of at least 8 hours per day to ensure they can
absorb CO2.