i dont see any signs of flowering, but its definatly mature and is prolly gettin two white hairs at each crotch. you asked the question about a week ago so maybe its only a week into flower watch for more pistils bunching at the top.

what kind of lighting do you have?

if no macro, a magnifying glass in front of your camera might help, if its digital youll see easily. There some pics in a thread called georgia grow or some thing, opie knows , of a ruderalis plants flowering check those