my friend was busted with 8 flowering plants (in the UK) he split up with his gf and she decided to turn him in .he managed to convince the cops it was for personal use ,although they tried there hardest to get him ccharged with dealing .luckily he didnt have anything like scales ,baggies etc so they had no evidence to charge him with supplying .its a very good idea to get rid of anything like baggies scales etc from your house or the cops will try to use them against you (even if your not a dealer ).he ended up with a caution and a fine but it could of been a lot worse and all this was for 8 plants only and in the UK .
I allso HEARD this story and im not sure if its true .....a couple of lads did a quite big grow in there flat they harvested and moved the bud to a different location ,the next day his front door was kicked through and the cops found his grow room minus the plants ,there was trim and pots still in the room and the story goes that the police knew how much had just been grown and harvested there by the evidence that was left ,and these guys were charged with supplying weed even though no actual bud was ever found .