marijuana grows naturally all over the world. I lived in tx and we had a plant sprout up in our backyard. In canada by a creek by my house there lots of plants growing in the wild......marijuana will grow in lots of places...
like rocketdude said its all different, but given the right conditions i reckon you could get just as potent, if not more potent - this is the sun we're talking about! gotta be better than any number of artifical lights?! i finished reading this book a while back and in it the geezer hooks up with some dude in india who'd grown a massive bud bush in his garden. and he got mashup on it. so the signs are good