Yeah , he ' s full of shit . <| sep |> To be fair he ' s made damn near everything else <| sep |> Fuck you , exactly right . Sam is shit . <| sep |> Actually a very good question and you ' re pretty close to the biology of what ' s going on . Smaller pot smaller root system smaller plant . BUT weed can still be coaxed , trained and played with that can all affect how big the plant grows . I have one plant in coco in a 10 L pot under a 125 w CFL in a small tent and the plant is no more than a foot tall but she has ~ 20 bud sites including the main cola which is almost half the height of the plant itself . Some strains grow taller than others , whike some stay short and bushy . I bought my seeds based on it being a compact plant . Most seed banks offer filters for picking seeds to make sure you ' re picking the right one for you .