Bending with rebar

Sometimes wrapping a branch or trunk with wire doesn’t have enough holding power, and using rebar as an anchor point for guy-wires is more effective.

This is my Kiyozuru Itoigawa, purchased from Chikugo-en in L.A…which, from all I have been able to find, is the origin of the cultivar in the US. I bought it to have the cultivar, but wasn’t enamored with the trunk. It has a nice twist at the base, but then straightens out. The yellow line is the area where things get pretty dull.

It has been container-grown and according to Gary Ishii, it was 25-30 years old when I bought it. Growing slowly in a pot means the trunk is stiff with dense wood. Therefore, wiring the straight portion isn’t really an option.

Here is the tree before the work.

A peek into the tree revealing the straight section:

This left branch is on the spot where I want to start moving the trunk to the right, putting that branch to the outside of the bend:

Wrapping the trunk with raffia helps protect it from snapping in one spot. It will still crack, but instead of blowing out at one spot, it will distribute small fractures along the outside, reducing risk of long-term damage. Start below the bend, and go all the way to the top.

Next, I drove the rebar through the root ball down to the bottom of the pot, and attached it to the trunk at two points, protecting the trunk with some rubber pieces and tubing.

Next, I attached a block to the trunk, just below the branch that will become an outside branch. In effect, this block becomes the fulcrum, and the rebar is now attached to the tree in 3 places, plus through the root system and to the bottom of the pot. It is secure and stable.

Next up, I attached a guy-wire at the height of the trunk I want to be pulled the farthest to the right.

Next, I used my left hand to squeeze the branch toward the rebar, and used pliers with my right hand to twist the wire, taking up the slack. I repeated this several times. Notice how much the trunk moved by how much slack is twisted out to the right of the rebar.

Finally, I used another wood block to push the apex back to the left.

So here is the final result:

While it’s a bit hard to see through all the foliage, the trunk does have movement now in that straight section. I’ll probably leave the rig on the tree for the next 2 years, and then begin making branch selection and styling the tree. I’ll also like tilt the tree more to the right a bit more to further accentuate the trunk movement.

Here is a side-by-side, which illustrates the results better.

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