isolate the male by itself in a room with no fans as soon has you see its a male, then let it chill for a few days untill a pollin sack or two opens, then wrap it up with a plastic bag black works best cuzz u can see pollin better, and tape it shut at the stem and let it chill for a few days, finally before you collect the pollin shake the plant with bag still on it. open the bag up from the top leaving the bottom still taped up you should see the pollin at the bottom, collect that and mix it with a lil veg. oil and use a q-tip to pollinate certain buds