The large numbers of "under lights" hobbyists is ample evidence in itself that artificial light is a fruitful means of growing orchids. Not only do many hobbyists consider growing their orchids indoors under lights an acceptable alternative until warmer weather returns in the spring, but a substantial proportion find the more controlled conditions and relatively minor costs of operation sufficient inducement to grow many of their orchids under lights all year around (see REFERENCES, entries 1, 2 and 3).