You probably haven't had to think this kind of stuff out before, I'm sure. I just took down two males in my grow on Sunday. I even meant for them to be there because I'm weird and like making quintillions of seeds of strains I like. I'm also quite allergic to cannabis pollen - next time I wear a mask when I cut one down. Which gets me back to the point here: In places where it is commonplace to grow outdoors, you don't allow open pollination. You either kill male plants on sight or move them indoors if you're inclined to mess with pollen. Pollen is itself a helluva mess. The slightest puff of wind will send clouds of pollen grains everywhere when their flowers start opening. If this thing has a chance to live, within a week it will be a dusty fellow and possibly spoil someone else's grow.