Ahhhh! I'm SO GLAD you started this thread! Personally, I've had damn good luck, on my 1st grow I had 4/6 females, 1 went hermi though. 2nd grow, 4/4 females....and dare I say it, no hermi's yet. :wtf:

So, other than hermi's, (Herm = light leak, usually) I really think it's just luck.

I've been wanting to explore this too:

Can you (environmentally) influence a seed(ling) in any way to change these ratios? Can you somehow change a 'female' seed into a 'male' plant?

I don't think so. That sounds, honestly, dumb.

Other opinions?