Bonsai Study Group Forum

General Category => General Bonsai Discussion => Topic started by: Michael T on April 11, 2012, 08:58 PM

Title: Thread grafting Yew?
Post by: Michael T on April 11, 2012, 08:58 PM
Anyone tried thread grafting a taxus before?

I have one that absolutely will not back bud. Tried for five years. I'm done trying to get it to back bud. Instead, I thought I'd try grafting shoots where I want them. And then I thought . . .. can you thread graft them?

I have many long shoots to try.

I thought maybe I could pull off some of the needles, wrap the remaining ones tightly with grafting tape or cellophane to make the shoot thin enough to slide the shoot through the drilled hole, then unwrap it and let it grow til it fuses.

Anyone think that would work?

I know I can't pull off all the needles or the shoot is going to die. That's also why I won't cut it back beyond the lowest point of growth to try and force it to back bud farther down.

Thoughts?
Title: Re: Thread grafting Yew?
Post by: Vulcan on April 11, 2012, 09:33 PM
Would it be easier to try an approach graft?
Title: Re: Thread grafting Yew?
Post by: Michael T on April 11, 2012, 09:45 PM
Probably, but I wonder if the graft would be more noticeable than a thread graft?
Title: Re: Thread grafting Yew?
Post by: Owen Reich on April 11, 2012, 11:36 PM
It could work.  I'm willing to bet that the heat produced drilling through the dense wood of yew will cook the tissue around the drill point.  May be no problem.  I would try knicking the trunk with a cut perpendicular with the trunk just above where you want a branch.  I recently met a man from England here at Kouka-en that collects yew.  He said yew have 3-year growth cycles; every 3 years they flush harder than normal.  Also, yew send 70% of their energy down into their roots; one of the reasons they can survive so long.  If the canopy of your yew is dense, you may want to thin it to allow more light to hit the trunk(s).
Title: Re: Thread grafting Yew?
Post by: MattB on April 12, 2012, 01:22 PM
I am surprised you haven't been successful with backbudding.  Like Owen said, try making a cut in the trunk.  I've also noticed that mine almost always throws buds around cuts even if I am just cleaning up a knob or old scar. 
Title: Re: Thread grafting Yew?
Post by: MatsuBonsai on April 12, 2012, 01:44 PM
Some varieties just won't backbud. I wouldn't recommend thread. Approach is probably your best bet. Might even be fun to try bud graft.

It just so happens the Louisville club is having a grafting workshop this weekend. Just sayin.
Title: Re: Thread grafting Yew?
Post by: Michael T on April 12, 2012, 03:18 PM
Grrr. When and where is the grafting workshop this weekend?

With four kids and a wife, I'm not sure I can get away.  It's not for a lack of desire. 



Title: Re: Thread grafting Yew?
Post by: MatsuBonsai on April 12, 2012, 06:55 PM
Priorities, man.

Bon Air Library.