Update on Chishio root grafts

Nebari Bonsai

Last March, Kathy and I placed 7 thread grafts through the base of the trunk in an effort to improve the nebari by increasing the number of roots that emerged from the trunk. The article is here:
http://nebaribonsai.wordpress.com/2013/03/23/thread-grafting-a-chishio-japanese-maple/
During the ’13 growing season, 4 of the 7 grafts lived. Unfortunately, the two best-placed grafts didn’t make it.
I went very light repotting this year, with the goal of combing out the new roots radially, removing what died, and creating more space for the roots to grow. Here is what I found:
Front 3/13:

20140324-212303.jpg
Front 3/14:

20140324-212418.jpg
Back 3/13:

20140324-212516.jpg
Back 3/14:

20140324-212623.jpg
While the back was more successful, the scion emerging toward the camera in the last photo shows where I girdled the cambium on the way through the trunk, then backed it out…and the tree rooted itself beyond the graft point. I left it to see if it would swell up and…

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