When exactly does the stretch happen? Cus I've had plants that finish stretching before the preflowers appear, and then I've had plants that seem to barely stretch at all.
I guess it happens at the same time?
I'm thinking about putting some of my bigger plants outside just to sex them, then bring them back into the veg room afterwards.
but I don't want to reveg the plants if they've stretched, cus then they'll take up too much space in my veg room.