From my experience, for what it's worth, when you are growing from unknown seed, it seems that most of the plants that get biggest the quickest also end up being male. It would stand to reason, after all, since cannabis pollinates via gravity and wind, that if the male want's to reproduce as much as possible, it'll have to do it from a higher vantage point.

Iry
irydyum Reviewed by irydyum on . sex confirmation First grow, sour diesel, veg for 4 weeks then started flowering, 12th day flowering, want to make sure my biggest plant is a male so i can kill him, any input is appreciated, thanks. Rating: 5