Thread Grafting a Japanese Black Pine

[alpineart]

This is an update on the thread grafts as well as the embedded inarch graft

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. Both graft are doing well, more than happy with the result thus far , another season on the threads and they will be severed . The inarch had the tape removed today and it has caused a little compression on the trunk ,

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The threads above and below the embedded arch graft , while i have not been happy with the past results of inarch grafting black pines , this graft was embedded into the trunk the thickness of the donor branch .An inarch graft or an embedded graft , the later will be the way to go from now on .

Cheers Alpineart

[MoGanic]

Very interesting Ian, I will be watching closely when the thread graft donors are severed.

Good luck and thank you for posting the update.

-Mo


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[dansai]

Thanks for the update Alpine. Good results and I hope you have total success.

From your original post it looked like you did these thread grafts in October after candles have extended but the needles haven't grown out. I have read elsewhere that in arch grafting is best done before growth kicks in as the notch could fill with sap and prevent a good union. Did you have problems with sap in your thread grafts or the notch you created for the embedded graft?

I saw a post by Grant Bowie about a thread graft done before candle extension and unfortunately have not heard a reply after a request for an update. Yet it seems your method has worked well. I may try both and see what results I get and post any progress.

[alpineart]

Hi Mo ,It would have been a little better if the after care was closely monitored 'ie' fertilized more often and pinched at the upper section of the donor tree to re-direct the energy to the lower branches .

Hi Dansai, mate i dont have a scedule for any work , i simply do what i needs to be done when and where during the growing season or be it Winter. No problems with inarch or threads filling with sap as the holes or notches were good fitting unions . Work quickly with the threads before the sap does flow or they do tend to gum up .Set the straw in place on the thread or the inarch/embeded graft prepared ready for the drill hole or notch and place in position imediately .

The embeded graft could be severed now its just not on the shedule . I have been planting rocks for the last fortnight and still have another month or so to go . My decidiuos are just beginning to drop their leaves so I'm flat out preparing the new terraces for more grow beds .

Cheers Guys .Alpine

[MoGanic]

Hey Ian,

Any updates on this one? Did the grafts make it?

Cheers,
Mo


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[alpineart]

Hi Mo , mate I didn't get to severe them as they were neglected as per many tree's , a lot of layers and threads are still in tact , some were casualties as well . . At some stage the inarch graft has been knocked off , most likely My Son or The Bear playing ball .

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The lower thread is the one to keep , it is positioned better than the upper branch .

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After next season I will severe and then style the main tree , the 2 threads need wiring now .

Cheers Alpine

[MoGanic]

Thanks for the update!

This thread grafting method looks pretty good so far. The inarch may simply not have been deep enough as I think you said already...

I placed 4 inarch grafts on my black pine yesterday, but placed them as deep as the branch so hopefully they don't pop off or anything.

Seems not to be a lot of swelling at the base of the branch where it exits the trunk (i.e the part you want to keep). Is that normal? On deciduous trees the grafted branch ends up thinner on entry and much thicker on exit. Is that perhaps because they grow quicker?

Cheers,
Mo


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[alpineart]

Hi Mo , mate the branches enter at around 3mm and now exit at 5mm top and 6mm bottom , so there is thickening , not like a decidiuous , although this Trident was set this season and hasn't thickened at all at entry or exit

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. Note the twig still in place at the exit point . Looks like another season before this can be severed . This Trident had a sacrafice apex shoot/leader maybe it took all the energy from the base ???., I'm asuming the pine is the same , the apex has grown well however the donor branch is from the very base and all the lower branches on the donor are weaker than the upper branches . I sure I realized the mistake using the lower branch as a donor last season when i did monitor the pine growth on the other specimens .

Cheers Alpine

[MoGanic]

That is a major point I've never heard before.

It makes sense that lower branches don't grow as well but I doubt I would've figured out to use apical branches where possible for grafting without doing it a few times haha. Gotta love the educational value of a forum hey?

Cheers mate!

Mo


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