i think with the days getting shorter your going to strugle a bit, u've left it a bit late, by 3 weeks you should start seeing sighns of sex. over the last month i've noticed that the growth on mine was very slow, which i put down to shorter light periods and colder nights, like floyd said a light would really help you out, check out my 2 grow log links below in my signature to give you something to compare with. i wouldn't like to say what the results would be if you carried on as you are, as i was looking to finish in october, but what i've experienced over the last month i would definately be looking to rig at least a few cfl bulbs, or a couple of fluorecents up if i was you. best of luck hope you get a good result:thumbsup: