My plants have been growing for about 6 weeks or a little longer, they are about 1 foot tall right now, they have around 15 sets of leaves. The stem is about as thick as a pencil. I don't think i have "alternating nodes" yet, but the plants are pretty big, i mean they are "wide" i was wondering if i put them into flower early could that hurt anything other than the yield. Because if it only hurts the yeild i'm just gonna go ahead and say f*ck it and start the flowering. Please let me know, Also what is the difference between a sativa and the other kind, how can you tell which is which?