You could always just ask your weed guy for 10 seeds for 20 bucks. He will have bag seeds. He might also know a guy. Anyway, once you get them you can work around pollinating your entire crop.
Collecting Pollen:
Prim your choice male of all its pollen sacks except a few (you only need one sack but it's nice to have a back up or two). Observe the sacks every day. A day or two before they pop they will turn from a football shape to tressel shape (they will bulge and form soft ridges). At this point pull the male from the room, tie down the branch that has the nanners on it, and underneath the nanners hang a coffee filter from some string. This is to catch the pollen. Put the plant in something you can more or less seal (I like to use two paper grocery bags, one on top of the other).
All done? Alright, now you have a breathable, wind-free environment for the nanners to pop. You can carefully check the bag every day to see if the nanners have opened, even jiggle it to help them along. Once they have opened, carefully remove the coffee filter, roll it up, and place it in a ziplock. Put a paper towel in the corner of the ziplock so it can almost seal but for the paper towel. Now, put your pollen in a dark and dry place (it will last for a few months). After this, change your clothes and shower before re-entering your grow room - it's really easy to carry pollen on your person.
Pollinating Branches:
Alright, now you have pollen. But you want to apply it, right? Go find your pollen ziplock, carefully take out the paper towel, then coffee filter and place it in a paper lunch bag, leaving the filter in normal filter form, open to the sky. Take the plant you want to pollinate into a spare room, one with zero air flow. Place a plastic bag over the branch you want to pollinate, rubber band it off, and spray your whole plant with a foliar spray of plain water and two drops of dish soap. The water inhibits pollination - but you kept one branch dry you sly guy. Replace the plastic bag around the branch with your pollen-y lunch bag (containing your pollen-y coffee filter), making sure to insert the branch horizontally into the bag, then rubber band it off at the dry mark. Now, shake, flick, shake, and flick. You can leave the bag on for a good 3 days. Right before you remove it, spray down your entire plant again. Get a vacuum cleaner with a nozzle and a clean hepa filter, and hold it under the lunch bag as you pull it off horizontally. Throw the paper bag into a ziplock. Vacuum the branch after throwing the paper bag into a ziplock, but don't let the bud actually go into the nozzle just keep it a few inches away. As the last step you spray the pollinated branch with water (the pollen should have already started its journey into the ovum by this point so pollen left on the surface of the leaves and bud is just contamination).
Boom, with a little setup and care you can get more seeds than you can use without impacting your yield much!
When I use this method I do get a few seeds here or there but the water and vacuum seem to do the trick. Once you see the pistils turn brown and recede the pollination is complete. Don't pull the seeds out until you can see a brown (green is immature) seed popping out of the bud.
Good luck with the move to a medical marijuana state!
