Black light came in first place, as you know. The reason it came in first place was because a black light, or an ultra-violet light, gives off ultra-violet rays which are super good for plants. Sunlight came in second because the flowers and leaves were healthy. Then incandescent light in third, because the leaves were droopy and the flowers were brown. Fluorescent light came in fourth place, because the leaves were droopy and they just snapped off when you touched them lightly. If that is what fluorescent lights does to plants, what can it do to humans?