any weed can have seeds in the buds, it just depends on wether or not there were male plants around during flowering, ditch weed usually has lots of seeds in it because it was grown sloppy, this in turn creates lower levels of THC therefore crappier smoke. if the grower removes all male plants from the area they can't polinate the females and the females don't waste energy growing seeds, you get better weed and more of it for your money cuz seeds weigh.