The main idea is you get two female cannabis plants to make seeds with each other. With two female parents, all the resulting seeds end up being female, too.
By the way, you don't HAVE TO buy new seeds. If you find some seeds in a bag of weed, those may work as well. It's just that the quality of the plants growing .
Auto-flowering cannabis and the easily distributed seed have opened a whole new market in the world of the online grow-shop, making it easy for home growers .