I was listening to a radio show from the early 90's, and they had a guy on talking about a movement he was trying to start. He suggested that everyone around the country plan marijuana seeds in grassy areas where they live. He said that if people kept that up, naturally growing weed would cover the country (weather permitting...), and it would become increasingly harder to maintain any kind of anti-marijuana law.
Have you ever heard of anything like this? Would it work (can marijuana thrive very much if left largely unattended)? What do you think?