Any way to tell what species I have??

I am growing plants(afghani???) under 26watt(9) 6500K CFL bulbs and wanna know how i can tell what kind of weed I got.
Thanks

oyu cant really determine the "kind" of weed or strain you would just have to guess by the way it looks and flowers wait until the end and take a lot of pictures
or are you talking about sexing?? i cant really tell
if you are you need to wait until you start flowering it to tel....