Tuesday, April 26, 2011

What to do with a straight black pine?

As part of the Easter Internship of the International Bonsai Academy Alex has provided his Austrian black pine, Pinus nigra Austriaca. He has collected this tree many years ago and brought it to a refined stage. But it is very straight and not so exiting. So we decided to give it a bend. But is it impossible to just bend this maybe 100 years old trunk. See what they are doing? Walter is helping Alex here.































13 comments:

Claudio Estrada said...

ouch! Big scar! Will it survive? I have a couple of those pines that I could do the same with.

André Toledo said...

How long does it takes to get healed?

Walter Pall said...

Andre,

three years to accept new bend. Ten to twenty years to mak good looking wound.

kestutisg said...

I undertook a similar treatment on a semi-cascade juniper last weekend, it had a quite long and boring and almost completely straight section, now it has a sharp bend. It was a fun exercise, everyone at the workshop was staring with big eyes as I was carving the trunk :) will wait 3 years now and hope the tree survives since it cracked a little.

Kestutis

Nik Rozman said...

How thick is the inserted wire?! 1 cm?

Nik

Michael said...

Is there an ideal time to do this kind of work? Some say fall, winter, early spring is best, but this seems a bit later than that.

Walter Pall said...

Nik,

it aluminum wire, 9mm, very well fitted for this job.

WP

Walter Pall said...

Michael,

good question. There are many theories and if you ask enough folks you will find that all year round could be the right time. I think end of summer, around August is a good time. Many say that winter, like February is fine. Late spring brings the problem that the wood is moist and full of juice. Therefore it will break easily when bent drastically. We know this and have not bent quite as much as we wold have wished and it seems there was no breakage. Later in the summer one can bend a bit more. i think this is a good way to approach this technique. Time will tell. We will report.

Ryan N said...

Walter,
Will the aluminum wire be left in the trunk for good, or will you remove it after the bend holds in about 3 years?

Walter Pall said...

Ryan,

we will remove the wire. The wound will not close for many years. It will unfortunately not be very beautiful. We will have to find a tree position where you don't look much for the hole. To see wire in a hole does not add beauty. Stability the tree will get soon. We will feed it with lots of nitrogen and water it aggressively. So it will grow fast and build lots of strong wood cells that hold the new shape.
This method does NOT hurt the tree much. It is like making a long shari line which most would aggree with. The disadvanage is that you will have a long straight hole for a very long time.

WP

alfredo espino said...

I just didn´t know this was possible. Ich gratuliere Ihnen, meine Herren!

Anonymous said...

Hi Walter, I am a great fan of your techniques and following your blog. I downloaded some of the pictures to show in my FB posts, Bonsai Chronicles. Can I use these pictures? Of course, I will attribute the pictures as coming from your blog. I will wait for an answer before posting. Thanks.

Walter Pall said...

It would have helped a lot of the request were not anonymous.