Sticky,
This is a few years ago. My wife's coworker and his teenage son planted tomato seeds in dixie cups. When they started to grow, he noticed his son had sneaked a pot seed into a cup. He brought it to my wife. I knew nothing about growing pot but did some investigating and found that the plant has to be a female to be of any use and how to tell the difference.
Well, this guy was a female and she got HUGE. We cut it in half and hung her upside down in our blacked out building for two weeks. It worked very well but that's the only time I'm going to try that. Too risky. If police were to have found that plant, that is manufacturing which is jail time. It was fun doing it once though.