Thats a good question... I know some growers Germinate a few branches of a strain they really like, so if they want to grow that strain again, they don't have to go looking for it again. As far as herms go, i would image that if a grower found one in his grow he/she would get rid of it asap, so as the pollen dose not contaminate the rest of the plants. Treat it as you would a male plant. I donno, my 2c.