There is an FAQ that can show you what to look for.

http://boards.cannabis.com/showthread.php?t=24450
Zandor Reviewed by Zandor on . Sexing? Got a question on sexing... I'm not planning on any more mistakes... but one can never be too careful about some issues... I have a female (I know that it's producing female flowers on almost all the branches, and this one has dozens of flower sites) except for the main cola. The top of the cola has what looks like female flowers starting (no balls), but I don't see any hairs coming from them yet. My second female tomato plant has hairs on the cola, and branches. I've already learned Rating: 5