A friend of mine is growing a plant that's been flowering for 2 1/2 months. Started at 16" and now it's 5' and still growing. He thought it would be around 3 1/2 to 4' total. We can't tell if it's male or female yet. No hairs, no balls. Every time something that looks like it might be a bud, turns out to be another leaf. What's up with this plant? He ferts every 3 - 4 weeks. The plant looks healthy.