Not that unusual really from what I've read around in grow logs and a couple books.

I have one of my plants that was under 24/0 for a month and started to pre-flower for me. Female luckily. It began to show pre-flowers when it was still on 24/0. So I know its entirely possible for it to happen.

I just put the lights down to 18/6 a couple days ago and the pre-flowers on that plant are starting to show pistils now.

None of the other 4 plants I have right now are showing any sign of sex yet though.


That one is a male though, no doubt about it.