Thats a crock of shit. I've had some of the higest THC content cannabis in Virginia. It really does'nt matter. The best marijuana is grown indoors under optimal conditions. As long as it is getting as many lumens as possible, between 75ºF to 85ºF has optimal humidity and proper CO2 and airflow and kept free of male pollen (sinsemella) it does'nt matter if it's grown in a shitbrick hut.