Hide your eyes! I'm changing clothes!

[Brian Van Fleet]

Funny, I stumbled across that super secret double scion graft method in an old issue of BT; somewhere around the issue that shows growing pines in colendars!

 

[Vin]

Max,

What Adair has done is called Approach Grafting. It can be done
like he has done with a separate plant in pot or it can be done on
itself if you will. Taking a branch and bringing it to a place on the
tree where you want a new branch to be (if that make sense).

I humbly would like to add that based on Adair's earlier
statement about Boon's "secret double flap technique", the graft
would probably look something like this (minus the tie wire)?:

 

[Adair M]

That's it. We used nails instead of ties to hold it together.

It's "super secret" because Kamiya didn't want Boon to know about it. Boon already knew before he went to Japan. Lol!

 

[bwaynef]

Funny, I stumbled across that super secret double scion graft method in an old issue of BT; somewhere around the issue that shows growing pines in colendars!

I just looked and see some depictions in BT #14 that look similar to what Vin posted (along with several others and photos).

 

[Adair M]

The problem with this technique is it creates a bulge at the graft Union. Over time, it becomes less apparent.

 

[thumblessprimate1]

I humbly would like to add that based on Adair's earlier
statement about Boon's "secret double flap technique", the graft
would probably look something like this (minus the tie wire)?:

View attachment 86295

That's interesting, I've done approach grafts like that myself.

 

[thumblessprimate1]

Check out the date of when this was published.
http://www.oldbookillustrations.com/illustrations/approach-grafting/

 

[Vin]

Check out the date of when this was published.
http://www.oldbookillustrations.com/illustrations/approach-grafting/

That's just too cool!

 

[barrosinc]

Adair, do you carve a groove on the receiver tree to fit the donor completely in it?
Or does this method not require a groove and that's why it leaves are larger bulge?

I have the doubt because it seems like there isn't a continuation of the cambium on the receiver (according to Vin's image) and they should only touch briefly on the side like on the image painted green.

 

[Vin]

Max,

Each graft is going to be slightly different. This image depicts two relatively
similar size branches for illustration purposes. That would most likely not
be the case with bonsai. For example, I have a couple of graft unions on a
Juniper that crisscross each other at 90 degrees so creating a flap is just not
possible.

I would think that however you can get the most direct contact of the cambium
would give you the best chance of success. I'm sure Adair will chime in as well.

 

[Adair M]

No groove. That's why there a bulge. There's tons of contact points.

Regular approach graft, put in a groove.

 

[Vin]

The other thing to consider is that this is not grafting with a scion
that has been cut from another branch or tree. Both trees/branches
are being kept alive from two separate sources (at first). The only
thing you are really doing is "injuring" the branches and binding
them together. As they grow and begin fusing together, they are
still being fed from separate sources (unless you're using a branch
from the same tree as in my case). Once the graft has taken, you are
really only pruning away the unwanted part of the donor whip.

 

[barrosinc]

Thanks guys!
The perfect time to do this is right before spring?

 

[Giga]

No groove. That's why there a bulge. There's tons of contact points.

Regular approach graft, put in a groove.

The only cut is the flap, correct?

 

[Giga]

Thanks guys!
The perfect time to do this is right before spring?

I would think so. According to Ryan you can do them in fall too but have to protect from freezing-I'll let them chime in for this type of graft since I've only done normal and approach grafts

 

[Adair M]

The only cut is the flap, correct?

No. Take a thin layer off both the scion and stock. THEN cut the flaps. Look at the diagram Vin posted. It doesn't show the scion very well. The idea is to increase the contact area.