it has to be put under a lighting schedule of 12/12, and then it will show it's sex, exceptions to this rule are.......clones, which when taken from a female plant will be female.........ferminised seeds..........and the black bag method of early sexing...........Peace out........Sid the female will have pistols, and the male do indeed have balls....lol......or pollen sacks......do a search in the top right hand corner of this page and type in sexing.....and happy reading.........