i understand youre curiousity, but its really something you shouldnt think about. especially for youre first grow. the "pros" on this website could still probably do something to increase yeild (maybe not all). either way IMO the quality of outdoor ganja can be/is higher than any indoor ive smoked. but i know thats not everyones goal.... id say a big part of growing big outdoor plants is where you live. if youre in Cali. you can easily get a pound+. but i live in MI and its not as easy to produce that weight from one plant.