60`s and 70`s, How about teens twenties and thirties ? Pot goes way back. They guy I learned from always said , "if you don`t sell, kill the males and you wont have seeds. (sensi) If you sell, it`s buy weight and why would you not. Seeds brought weight to the scale. Most people bought, but by the time it reached you, rot and mold has set in to the bails. This is why he grew, all his biker friends grew and a few others. Most didn`t want to wait the season, but I learned quickly that if you grew enough, you never had to wait after the first season. There was no such animal as the hermaphrodite. Not till the mid 80`s did I see my first one. What a sin that experiment down in Mexico was. Hermies were created, not natural.