earliest sex?

what is the earliest you can tell if you plant is a boy or girl? what signs can you look for..

it will take about 2 weeks or more to tell the sex after there put in the 12/12 light cycle for flowering, basically look for V shaped hairs for a girl, and Balls for a boy

i always notice pre flowers on my plants that are grown from seed about at the 5 inch tall - 8 inches.. depending on how i trim them. most of the time i have continued to veg for a month longer or more before i flower them. so far all the pre flowers have indicated correct. most of the time they stick around until flower, but a few times the preflowers dissapear. just look closely. they are small, but you know em when you see em.

word flower pimp..