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Author Topic: Approach grafting for JBP nebari improvement  (Read 2443 times)
pwk5017
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« on: July 12, 2011, 01:28 AM »

I have heard people mention approach grafting seedlings onto older JBP as a means of nebari improvement.  Does anyone know of a documented source print/online that details how to do this?  Is it as simple as making a groove in the large tree and fitting the seedling into the groove, or do I have to cut into the seedling as well and line the cut part of the seedling with the groove in the mature tree?   Thanks.

Patrick
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MatsuBonsai
John Callaway
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« Reply #1 on: July 12, 2011, 08:05 AM »

I've seen an interesting technique documented in a few different print publications.  One of them was in Kawabe's book, which is Japanese language only at this point.  I think I saw the same technique in another English language book/magazine recently.  I'll check tonight.

The basic technique was to take a seedling with a low branch, cut the apex off and form into a flat point for grafting, leaving the low branch(es) to keep the seedling growing.  Then cut the trunk of the main tree with a sharp chisel to insert the flattened point.
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MatsuBonsai
John Callaway
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« Reply #2 on: July 12, 2011, 07:06 PM »

Looks like I misremembered, the article in question was on juniper, though I'm not sure it wouldn't work for JBP as well.  If you're willing to experiment, let us know how it works.  Smiley

Otherwise, I would suggest the same technique used here, using seedlings instead of the connected branch.

Where are you located?
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pwk5017
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« Reply #3 on: July 12, 2011, 11:34 PM »

Pittsburgh, PA.  You and I are in similar zones, if not the same exact.  I am curious how the trees would fuse.  Could I perform a thread graft with 2 year old seedlings?  Just feed the roots through the hole instead of the norm of pushing a maple(other deciduous stock) trunk first through the hole.  Would the seedling and stock eventually fuse or no?
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pwk5017
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« Reply #4 on: July 12, 2011, 11:38 PM »

Ok, I just read through your thread.  I assume it is critical to expose the cambium on both trees to ensure a union?
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MatsuBonsai
John Callaway
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« Reply #5 on: July 13, 2011, 12:20 PM »

Yes, and be sure the cut is deep enough into the main tree so that the scion/seedling makes a good bond and doesn't force itself out.

Also, you might consider adding your location to your profile.
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Dirk
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« Reply #6 on: March 31, 2013, 04:52 PM »

Is there a follow up on this thread yet?
Would it be possible  to completely renew the rootsystem of a JBP by approach grafting seedlings?
Will the seedlings thicken enough to make believable roots?
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pwk5017
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« Reply #7 on: April 10, 2013, 10:04 AM »

Funny that you should ask, dirk.  I have spent the last two weeks repotting all my JBP stock.  I have been growing from seed for 5 years so I have many trees of various ages.  My oldest seedlings were not seedling cuttings, so about half have pretty sub-par nebari. Some I was lucky enough to get nice root development, but the others I knew would be poor material without some serious intervention.  I used a couple 2 year old seedlings to approach graft on the 5 yr old pine bases.  We will see what happens in a couple months when I check in on the grafts.  If they do take, I might just let the grafts run wild as sacrifice branches to build very large bases.  This is my first attempt at grafting a pine, but the process seems pretty simple and fool proof.  I made a pretty deep notch on the parent plant. The seedling fit in semi snug. I scraped the side of the seedling that was going to fit into the cleft, and I stapled the seedling in place. I  then covered the whole thing in wound sealant to keep the graft moist. I am hoping for the best, and I will keep you posted!
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Dirk
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« Reply #8 on: April 10, 2013, 12:40 PM »

Do you have some pictures of the process?
I ask because this black pine will be on my bench soon and I don't now for sure if the nebari is good.
I'm also growing JBP from seed and plan to grow some seedlings for improving the nebari.
So I ques I better do not make cuttings of a number of seedlings to make them grow faster and make straight roots.
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bwaynef
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« Reply #9 on: July 08, 2013, 08:32 AM »

So, how'd it go?  Are you able to discern results at the mid-point of the season?
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pwk5017
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« Reply #10 on: July 10, 2013, 06:03 PM »

Funny you should ask, I was really tempted to peel the cut paste off and see what was going on about 3 days ago! I showed some restraint and figured I could risk the graft taking if I mess about with it. The seedling is growing strongly, so I am assuming the graft will work as long as it didnt push itself out of the notch.
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