ive done it! i have a mother plant that has 5 kinds of kind on it! I took my strongest indica (grows roots like a mofo) and made small 45 degree cuts into the branches (use brainches that are big enough to cut 2-3 mm into without cutting more than halfway through. Its best to do this near the end of the branch so you can bag it later. Dip the cutting in clone solution, and slide it in. Put a wet paper towel or something similar (folded up) in a clear bag big enough to cover the branch you are cloning. Cover the branch, with the paper towel in it (so the humidity will stay constant) spray the inside of the bag with a mister. Tape or tie the bag on so its sealed, and then wrap this with shade cloth or something similar so the inside of the bag doesnt get too hot. 2-3 weeks later you can take the bag off and it should be grafted well. I did this successively so now i only have one mother. You can also graft Hopps onto your plant- and when it grows out and is ready for harvest, the hopps will have THC in it. Then you can make weed beer! Good luck everyone!