The acer in the bottom picture was air layered last year off of the mother tree in the upper picture.
We are now Air layering both mother tree and daughter.
update 12/24/16 this past fall we successfully got another tree off of the top tree.
The one off of the daughter tree is still touch and go, not seeing many starts for buds but time will tell.
Bonsai and Burl - 
Reblogged this on Wolf's Birding and Bonsai Blog.