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Trident Maple Trunk Fusion Tree #1: 3 Years later
Oh myβ¦ I neglected this tree for almost 3 years and just let it do itβs thing in a corner in the garden. But damn, am I glad I did that!
Previous posts about this Acer Buergerianum trunk fusion project can be found here.
I needed a shovel to get the wooden growbox off the ground since the roots grew right through the wood that had slowly decayed over the last 3 years.
The whole thing was about 2,5 metres or 8ft high.

After cutting back the branches I moved the tree to the work table.

The wooden growbox was so rotten that I could literally peel it off (with a little help from some tools since the roots grew in the wood).
A very dense rootball appeared together with some big long roots.

After almost an hour of combing out the roots and cutting back the big roots the result looked like this :


As you might have noticed, only 3 of the 4 trunks that the tree had 3 years ago are left, I cut off the 4th a few months after I made the previous post.
Anyway, time to put the tree back in a pot. No more wooden growbox this time but a regular plastic training pot. After putting some wire on a few branches to point them to the right direction I was done for the time being.

Because I let the tree grow out for 3 years it completely closed all itβs big wounds. Ofcourse I made some new big wounds but they will also heal eventually. Thatβs what trident maple bonsai do.
The photo below shows a big wound that has closed completely with another big wound above where I just cut off a branch.

Now letβs try to get some more branches on this sucker 
Shin Deshojo Maple β 2026 repotting
14.03.2026 β Repotting the Shin Deshojo maple (after removing the rootstock, air-layer from last season)
I decided to try the method with a wooden box β boards connected with nails. The flat and fairly wide shape should theoretically speed up the development of a βpancake-styleβ nebari in the long term.
Now itβs just a matter of watering and fertilizing; the tree will be allowed to grow freely without any pruning so it can build up as much mass as possible.
I may also make an additional (backup) air-layer, since this is the only Shin Deshojo I own.
Arakawa summer 2023 β spring 2026
Barking progress from summer 2023 to spring 2026. This process takes a long timeβat least several years are needed for the bark of the Arakawa variety to become mature, corky, and rough. This gives the appearance of an old, mature tree, unique and striking look.