Whats the earliest you can tell if it is a female? i would like to start to clone my plants if they are. but the only way i know how is to put it on 12/12 and see what sex shows up. is that the only way??
You can tell when your plant develops pre-flowers. this usually occurs after the fifth week of vegging. Sometimes longer depending on the strain and growing conditions. Pre-flowers are the only way to determine sex without switching to 12/12 or taking clones to flower. Good luck.