Notching a Lepto

Share your success stories about defoliation, bare rooting and anything else relating to maintaining healthy bonsai.
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Ben10000
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Notching a Lepto

Post by Ben10000 »

Hi All
Getting more daring with styling trees, anybody done this succesfully with a tea tree, just curios to see how the scaring would turn out?

Cheers
Ben
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If you cant make a tree look like a tree then bonsai would difficult!!!!
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Re: Notching a Lepto

Post by NBPCA »

It will get rough bark all over so scarring will be covered and not a problem.

Good job.

Grant
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Re: Notching a Lepto

Post by Ben10000 »

Thanks Grant
If you cant make a tree look like a tree then bonsai would difficult!!!!
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Damian79
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Re: Notching a Lepto

Post by Damian79 »

Hi Ben
Forgive me for asking but what is the purpose of notching?
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lackhand
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Re: Notching a Lepto

Post by lackhand »

Damian79 wrote:Hi Ben
Forgive me for asking but what is the purpose of notching?
Damo
The notches remove the material and thus the compression force from the inside of the bend, which allows you to bend thick branches/trunks more than you normally could.
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Notching a Lepto

Post by MoGanic »

How does it affect the bark on the side of the trunk opposite the notches? I wouldve thought it would cause the other side to stretch more as the outside of the bend is often where breaks occur anyway?
There are many ways to do things, but only one "best" way.
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Re: Notching a Lepto

Post by lackhand »

MoGanic wrote:How does it affect the bark on the side of the trunk opposite the notches? I wouldve thought it would cause the other side to stretch more as the outside of the bend is often where breaks occur anyway?
My understanding of this is from a Ryan Neil video, though I can't remember which one at the moment. Looks like time to watch them all again. :whistle:

As he explains, bending a branch puts a compression force on the inside of the branch, and a stretch force on the outside. While you are correct that the break usually happens on the outside of the bend, a large part of this is because the inside of the branch is compressed in that direction, and increases the force on the outside. By removing some material on the inside of the bend, that compression is reduced, and thus the stretch force on the outside of the branch is reduced as well. The outside ends up moving the same amount, but with less pressure coming at it from the inside, it is much less likely to break. Hope that makes sense. I'll try to post the video if I can figure out which one it was. Or you could ask him if you're going to the national convention. :yes:
Cheers, Karl
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Re: Notching a Lepto

Post by Ben10000 »

MoGanic wrote:How does it affect the bark on the side of the trunk opposite the notches? I wouldve thought it would cause the other side to stretch more as the outside of the bend is often where breaks occur anyway?
Hey Mo that's why I don't take a chunk of the notch but use the thickness of the blade with a few cuts, my weapon of choice!! Cordless Reciprocating Saw, very precise in the cuts.
DSC05346.jpg
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If you cant make a tree look like a tree then bonsai would difficult!!!!
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