Sabtu, 21 Agustus 2010

Making a big bend

Todays post is about making large trunk bends. The material is a 12-15 year old grafted Atlas Cedar. The height is 48" and the width of the base at the soil line is about 2 3/4". The area above the graft has a slight reverse taper which I hope to be able to hide.
Here is the tree before work started.

The first step is to prepare the trunk for bending. I begin by wrapping wet raffia  tightly around the trunk being careful to overlap each turn so that there are no gaps.



After the raffia wrapping, I placed three large wires parallel to each other on the trunk to give added support to the area to be bent.



I then add more raffia on top of the wires at the areas where there will be the most stress. A piece of rebar is then placed on the trunk being tied on at the place where we want the bend to be . Because of the thickness of the trunk we need the extra leverage provided by the rebar.



Using the bar for leverage I make the first bend. I do this slowly and carefully listening for any cracking sounds. This is one slight cracking noise just before I stopped but it should be no problem. Its not the first crack that is of concern but the second one right after the first.


At this stage I use a guy wire from the tree to the top of the pot to hold the trunk in this position. I removed the rebar to reposition it for the next bend.
Again using the leverage provided by the rebar  I slowly bring the trunk further down towards the ground.  Again taking my time and listening carefully for any sounds of cracking. At this stage I use a wire tied around the pot and to the trunk to hold the tree in position.

Now I will use the guy wire to pull the trunk even closer to the pot. After I get it into the  desired position I lightly trim and  wire all the branches, and position them . You can see the difference from the above picture.
This will be the new front of the tree when it is repotted next spring. For the next couple of months I will leave the tree to recover from the stress of being turned upside down. By next March I anticipate that the tree will be healthy enough for repotting. Other than water and fertilizing and light pinching I won't be doing much until then.
This same technique can be used on pines, junipers and other trees as well.
I hope you enjoyed todays post. Please feel free to leave any comments.

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