:stonedsmilie: No Pre-flowers? I see them all the time usually where a main stalk and branch meet at about 7 or 8 weeks whether or not in flower. Females have a very obvious flower that occurs and guarantees the plant is female or at least half (hermies happen). Helps weed out the boys early.
Well if you put them in dark first then the sex should start to show anyday because obviously the male grows sacs no pun intended. However if you didn't induced them by giving them at least 36 hours of darkness then the maturation will be slow. I have never went into flowering without inducing my ladies. You have to love these hoes and put them on the track right so they can make that money.