I am not sure where the word Guy wire comes from, but a wild guess is that it is from the word Guide. It is defined as a wire or cable used to stabilise something, like a mast and seeing that dictionaries and Wikipedia will not relate this to Bonsai, here is my version of it: A Guy wire is used to pull branches down and is used instead of normal Bonsai wiring due to various reasons.
My common use for it is on plants with very soft bark and more often, on older trees when I want to preserve the bark and also in cases when I do not want to cover the bark with raffia or cloth. I usually only use it to pull branches down, but it can also be used to get some shape in a branch by using more than one guy wire, pulling in different directions.
As I use aluminium wire for this task and usually a thin wire, it is important to protect the branch and the bark at the pressure point on the branch. Aquarium tubing is perfect for this task. Short lengths are used and the wire is pulled through it and then it is placed in position. The other end is then securely fastened at an anchor point.
An anchor point can be many things. If the tree is in a plastic pot, a hole through the rim of the pot is an easy way to do it. In a timber box, a screw can be used to anchor the wire. As in the example that I show here, the tree is in a ceramic Bonsai pot and a thicker wire is used around the pot through which the guy wire is then threaded and fastened securely.
Once the wire is fastened, I use a short length of wire through the two wires around a branch to wind the two wires together. This does not only has a neater appearance, it can be used to fine tune the positioning of a branch as the branch can be further pulled down by winding the wires up more.
This method definitely exerts less pressure and therefore less stress on the tree. As you use a thinner wire, it is less expensive. It is also easier to remove and once removed, the wire can still be used for other purposes, especially if it was not wound tightly.
A friend of mine is going to make alterations to his house which includes demolishing the garage. As my luck would have it, a relatively old Bougainvillea climber is growing on the side of the building and it was going to end up at the dump when building starts. I kindly offered to remove the plant for him. So today was the day, overcast with the odd light rain falling. Perfect conditions for the operation.
The first part of the job was to take the plant down to stump level. This took about an hour as this Bougainvillea had a lot of quite large thorns. Once that was done, the stump was wiggled and I found that it had two large roots going to either side of the plant. One of the surprises was that the wood is quite soft and this extended to the roots. The spade went right through a two-inch thick root with one go at it.
One of the roots grew underneath the building and as it was quite close to the building, I decided to pull the stump over to the front. On the one hand this was a mistake as the large root tore in two which left it with quite a large wound (was going to have one anyway due to the cut), but on the other hand, it left me with a smaller plant now separated from the larger stump. Not bad, two plants for the price of one dig.
I quickly cleared the area up and did not wrap the roots as I would normally do as it was a ten-minute drive to get home. At home, the two plants were placed in a bucket with water in which I dissolved some aspirin. Aspirin has the same active ingredient that is found in willow bark and this is said to be supporting root growth stimulation, just like hormone rooting powder.
From here I prepared two pots by adding drainage material (stones) at the bottom and then filled the rest with 1 part compost and two parts pumice. I also shortened the larger stump. More rooting hormone powder was applied, planted, watered and placed in a good, protected spot. The good old human attribute of patience will be applied while we await the outcome.
This Juniper was lifted in June 2015 and planted in a plastic container. It came from a garden and was planted in a very sandy soil which came away during the lifting process. It was basically bare-rooted at the time which in my mind was not ideal at the time. I did bring some of the soil with me to add to the new mix with the hope that it contained some michoriza. At this stage I also removed some of the long, whippy branches with very little foliage on it to try and balance the foliage to root ratio.
From this point on it was watered and fertilised and received plenty of sun. A few branches died over the next twelve months, but plenty of new growth showed as well. All of this was of the needle type and then reverted to adult growth. The tree was also planted into a Bonsai pot at which time the roots were reduced a bit.
I had to move my trees three in the last six months. First from a colder, wetter part of New Zealand to an almost subtropical climate. The first place was a temporary place while we were shifting our household, then to a rental until we shifted into our own house three months later. Eighteen months after the lifting (January 2018) it was time for its first styling. Deadwood was created on the cut branches and then the wiring started. This took about six hours with not more than two hours done per day. I find it is best to start at the bottom of the tree and then work towards the apex of the tree. I have just used aluminium wire and varies from 1mm thickness to 4mm thickness. Quite a few guy wires were used to pull larger branches down. I use plastic tubing to protect the branches. Due to a few harsh bends, light cracks appeared and these were sealed with cut paste.
Now it is time to let it rest. Water and fertilise, keep an eye on the wire to prevent it from cutting in give it plenty of sun. It could be show ready in about three years. The foliage pads must mature and I have left a bit of new growth on the main branch from where another branch or two can be formed to fill some gaps.
Some of the Jin are too long, but I will leave it as it is for now. It is better to shorten them later. It is not that simple to make deadwood longer later. Lime Sulphur will also be applied later after some carving, burning and light sanding.
I like to look at my trees from the top as I used to style very flat trees. Probably because I look at too many trees in photographs and this made my designs look very two dimensional and flat. From the top, it is easy to see the depth. You can do the same by looking at the tree from the side, but from the top you can also look for branches and foliage pads shadowing the ones below them.