IMO If ya want to grow big then go with outdoors, if you only want to grow like 3 or 4 plants and be able to harvest like every 3 to 4 months then go with indoors. But like everyone above me has said it does cost a bit more to do it inside but its less work than growing outside but its a lil more diffacult inside also. You still need nutes and good soil for both grows but with growing outdoors you will have bigger yeilds. And if you have enough plants maybe a couple diff strains you will have alot of diff good smoke for the rest of the year untill next growing season. And will not have to grow 2 or 3 times a year to be able to have smoke without buying it, but you could also veg them inside over the winter and put them outside during spring. So by the time they flower and are ready to harvest you will have some massive trees.:thumbsup::jointsmile::stoned: