im a medical grower in wa and just started my first crop.. THeres absolutely no way unless clone not even then that ur gonna have white hairs yet.. i had 3 plants i grew for a couple months, one was 2 feet and bushy, the others were same age and way smaller.. on the big plant took me less then week to see the white hairs, looks like little green pistol with 2 TINY white hairs stickin out, once that happens you can stick it back into veg to make a mother and clone , or bud it, up to you, thats how u find out.. my little ones still show no sex just the big one, but its a monster so hopefully it will be cloned