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chuck60

suitable scion wood?

15 years ago

I posted earlier about losing a couple of trees to to buck rubs. One is a Wickson crab, and I plan to graft something to the trunk by cutting off below the girdled area and trying a bark graft. I thought the top growth of the tree was dead, but while doing my usual crappy pruning work on my other fruit trees this weekend, I checked the Wickson and it looks like the top might still be viable. However, none of the pencil sized wood looks like the kind of scion wood I see in pictures. All the branches have many short stubs, with terminal buds. Some of this, in fact most, looks pretty good. It is green and flexible. So....is such wood any good as scion material? Should I remove the stubby buds before grafting, or some at least? The trunk I'll be grafting to is at least 1" in diameter, so I figure I can try two, or maybe even three bark grafts. I was thinking that if the Wickson wood was OK to try I could do one of that and one of some other variety I have with more "standard" looking scion wood. Opinions?

Chuck

Comments (8)

  • 15 years ago

    Scion wood should to be of one year's growth, yours sounds like older.
    I would wait another year or bud graft later when you see the tree has
    recovered from the deer damage and you see good growth.

  • 15 years ago

    If it's one year wood and doesn't look dehydrated you might as well try it- it should work. Rubbing usually interupts the flow of carbos to roots but not water from roots.

    I have my best results when I use wood that has just been removed from a tree without storage that I graft at very first signs of growth.

  • 15 years ago

    Since this tree was completely girdled, it won't be recovering. I guess I'll try bark grafting with what I have from its own wood, and maybe do a second graft with some better wood from another variety I'd like to have another tree of. I have an old tree that might be Grimes Golden which is in decline, but I think I can fined decent wood on it. Then, if the Wickson graft takes I'll keep it and remove the other. On that topic...if I do two bark grafts to this stump, which will be about 1" in diameter, what would happen if I let both grow, assuming incredible luck on my part? It seems like I might get a tree with a really poor crotch angle.

    I already ordered both a Wickson crab and a Grimes Golden, so I'm covered for those varieties. I'm just trying not to lose the solid root structure of this tree. I have another stump I will also graft with the old tree's wood, the one I suspect is Grimes Golden. That one is/was a Jonafree, also completely girdled, and wasn't doing all that well anyway, though the roots should be good.

    Chuck

  • 15 years ago

    Chuck how long are the short stubs? are the 1-2" things spurs (crooked-growing things) or short straight shoots? All you need is a couple 1-year shoots (not spurs) of any thickness and you will be good. The tree had to grow somewhere in the last year so there has to be a few of them. The pencil thin aspect is not particularly important, its the viability of the wood that matters. I think pencil is picked because its an easy size to work with and if you are doing whip and tongue grafts it works well since it often matches the rootstock size.

    Scott

  • 15 years ago

    Scott,

    They are short, straight stubs, less than 1". I'll look again for any obvious growth from last year, but what I noticed was really small diameter shoots which came off from my pruning cuts of last winter. I had really bad CAR last year, and the Wickson was hit with that, so that may have limited new growth. I wonder if I got more spur-like growth because of the CAR. Is that possible?

    Note to self: Go buy new bottle of Immunox and quit being so cheap about getting a decent sprayer.

    Chuck

  • 15 years ago

    Chuck, those small diameter shoots off the pruning cuts will work fine. I have grafted many such pieces and if anything they work better than the thicker wood.

    Scott

  • 15 years ago

    Scott,

    When you go to the really small diameter stuff, do you still try to cut a wedge, or do you just scrape the outer bark off and expose the cambrium all around the part you insert under the bark of the host? These twigs are....twigs.

    Chuck

  • 15 years ago

    Chuck, I cut a teeny wedge in it and stuff it in. Make sure to use the terminal bud since its relatively bigger.

    Scott