ok what u will find is pics of a male plant both in its earliest stages where it kind of looks like a small mole on a stem to full balls. and no it is not too late at that point, because it takes a while for them to open & be viable anyway. there is no magical tell for males, u either r experienced enough to pick up on them in there earliest of stages, or have to wait until u see one or two together or hanging, which r the signs of a male...amiss the white hairs.