A listener sent in this tip:
"The spindly pansies from the call this morning are most likely from the grower using "gro" ligts which are incandescent (red spectrum), or too much. "Gro" lights which are flourescent (blue spectrum) will yeild fat, bushy plants. Ideally, growers should use both blue and red spectrum lights indoors to have healthy, balanced plants. Your callers problem will resolve naturally (in the sun's lights) within 45 days. I only know this because my father is an electrical engineer, and helped me set up lights in my garage to start seedlings and bulbs (which has worked wonderfully for me)."