A visit to the GSBF Bonsai Garden at Lake Merritt this spring will reveal an intriguing bonsai technique – paper-wrapped bonsai wire. I learned about the technique from the garden’s curator, Kathy Shaner, not long after she completed her apprenticeship to Yasuo Mitsuya in Toyohashi, Japan. Copper wire is more commonly used on conifers than it is on deciduous trees as copper can stain the trunks and branches of deciduous trees. The primary alternative to copper bonsai wire is aluminum. While aluminum doesn’t stain trunks or branches, it doesn’t hold as well as copper. The solution – paper-wrapped bonsai wire!
Hawthorn bonsai with paper-wrapped copper wire
Working with paper-wrapped wire isn’t bad – the trick is getting the paper on the wire. It takes a bit of practice. The paper is rolled onto a single section of wire at a time. The result is a funny looking tree – and if all goes well, there will be no scars.
Hawthorn – wiring detail
The garden does a good job of providing information about the care and maintenance of the collection. The paper-covered wire treatment elicited its own note:
What’s with the white stuff?
What you are looking at is wire that has been covered with paper. The wire is to shape the tree. The paper wrap is to protect the delicate bark from the wire. Most trees do not need to have the wire covered, as their bark is not as susceptible to wire marks. We will monitor the growth of the tree, and when the wire just starts to cut into the bark, we will remove it. If the branch does not stay where we placed it after putting on the paper wrapped wire, we will repeat the wiring. Normally one season of growth is sufficient for the branch to stay in place after the wire is removed.
Pomegranate with paper-wrapped wire, bamboo sections and irrigation lines
Pomegranate – wiring detail
The Garden at Lake Merritt’s website contains a lot of information about the trees in the collection. The weeping flowering cherry below, the site notes, is known as “shidare-higan-sakura in Japanese, or Prunus subhirtella.” It was donated by Pete and Amy Sugawara and was started some time around 1980.
Weeping flowering cherry, ‘Benihoshi’
I don’t know where one can find the paper used for this technique – which is fine, for the moment, as I have a lot of pines to wire.
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