Thread graft through chop site

[dbonsaiw]

Is it possible to thread graft a branch so that it emerges from the site of the trunk chop like in the attached pic. I’m asking specifically about a JM if that matters.

 

[rockm]

Is it possible to thread graft a branch so that it emerges from the site of the trunk chop like in the attached pic. I’m asking specifically about a JM if that matters.

I guess it’s technically possible BUT I guess you’re asking if the graft will work to cover the cut site — it won’t

living tissue won’t graft to dead. The graft will only “take” at the entry point where there is living tissue to bond with. That will likely result in ugly swelllng at the entry site. Additionally down the road sooner or later if the scion lives it will grow in diameter to fill the hole you drilled through the trunk. That will eventually constrict the scion and kill it

 

[dbonsaiw]

I guess it’s technically possible BUT I guess you’re asking if the graft will work to cover the cut site — it won’t

living tissue won’t graft to dead. The graft will only “take” at the entry point where there is living tissue to bond with. That will likely result in ugly swelllng at the entry site. Additionally down the road sooner or later if the scion lives it will grow in diameter to fill the hole you drilled through the trunk. That will eventually constrict the scion and kill it

Thanks. How about once the wound has healed over? I was asking just to understand possibilities for branch placement, not so much to heal the actual cut.

P.S. I did see an interesting video where someone was using approach grafts across large cuts to assist in the healing, but that's a different issue.

 

[bwaynef]

Once its healed over, a threadgraft in that location would be possible, but you already have branching in the prime location on either side of that chop.

 

[Dav4]

Thanks. How about once the wound has healed over? I was asking just to understand possibilities for branch placement, not so much to heal the actual cut.

P.S. I did see an interesting video where someone was using approach grafts across large cuts to assist in the healing, but that's a different issue.

I’ll perform both thread and approach grafts using the callus tissue of a healing chop scar. It works quite well.

 

[Dav4]

Trying to post a picture from my phone and failing… success

 

[rockm]

It’s possible once the wound closes. Callus tissue has no resting buds in it so a graft would be a good thing then. Even if the callus tissue has t completely covered the bare wood. A graft could be threaded through the live tissue around the wound once there’s enough. Done at that time such a graft would speed up healing once it takes and grows

 

[Shibui]

Is it possible to thread graft a branch so that it emerges from the site of the trunk chop like in the attached pic.

The graft MUST join onto living cambium. You have live cambium around the edges of a recent chop so you can graft there but no cambium in the middle of an open wound so a graft can't live where there's no live bark/cambium.
The others have already mentioned callus gradually growing over the wound. That callus/healing area has cambium under the new bark so you can graft into the new wood growing over the wound if the chop is older - see pics above.

 

[bwaynef]

Once its healed over, a threadgraft in that location would be possible, but you already have branching in the prime location on either side of that chop.

Its been said above by @Dav4 @rockm & @Shibui , but I feel like I want to clarify my comment a little better. The wound doesn't need to heal completely over before you threadgraft, but the graft needs be in tissue that's begun healing over. It needs to knit with other living tissue.

While it's possible to use grafts to speed up healing of a wound, those (bridge grafts) are done into living tissue, usually scar tissue.