The first pic, definitely female. Some of the others are a little questionable, but it's hard to see, I feel like I also see pistils. If you're noticing more than two of the pre-flowers and no pistils yet, I would start watching very closely.
Sometimes you have male pollen sacs appear above the buds. This is a
hermaphrodite plant that shows both male and female pre-flowers in the same bud site. The male and female flowers grow very similarly in shape, though some are producing pollen while others are producing pistils. The plant is confused.
Hermie
[IMG alt="This "male" cannabis plant with pistils is actually a hermaphrodite (hermie) marijuana plant" type="full"]http://www.growweedeasy.com/sites/growweedeasy.com/files/male-cannabis-plant-with-pistils-is-hermie-sm.jpg[/IMG]
Sometimes you also have female preflowers that look male, because each strain has different looking pre-flowers. This preflower is surprisingly a female plant, the preflower opened up with a pistil and all the calyxes grew in like that. No hermies in the end.
Female Pre-Flower
But here is a male plant, with preflowers that look very similar, though slightly more spade shaped and more narrow at the base. Female preflowers tend to be pointy at the top, with a fat base that attaches directly to the stem (not on a little stem, like many male pre-flowers). Whenever in doubt, it's better to wait since sometimes you'll be surprised!
Male Pre-Flower
Male pre-flowers tend to be "spade" shaped
Here are
more pics of female pre-flowers and
hermie plants if you want to check them out!
