This is a great video about air layering trees. The artist first air layers a wild Prunus Mahaleb in the wild. This is a really great idea, why not air layer a tree in the wild that may not be collectible? Then he brings the tree home and lets it grow before it is again air layered into 2 different trees. He also gives a great tip on anchoring the new air layered tree to the pot, it is towards the last of the video. Great video to watch on how to air layer. I have posted the video on the Air Layering page under Bonsai Basics.