I have just read an article about correcting inverse taper by drilling a cavity and compressing the trunk to reduce it. Sounds drastic to me but I wonder if anyone has tried this or have any other way that I can reduce inverse taper. I have tried a tourniquet but it did not work too well,
Apparently so, it is in the American Bonsai Society journal, the article does not go into enough detail for me, I I have many questions that I can't get an answer to. It also seems to be quick, only a year.
I am not sure I want to risk a good tree on a procedure like this although I do have one with inverse taper. I can see the principle. I will ave to talk to some of my friends to see what they think,
Im afraid that correcting inverse taper is really difficult, and only viable way with some caveats is to air layer it with some wire in the wound... but who knows I'm interested as well in this topic, any link to the article that we can check?.
You could give this method a shot on some cheap sacrificial tree from a big box store before trying it on one that you care about. Ideally you would use the same type of tree, on a section of similar girth and/or age (hardened off vs green, bark coarseness) to see how easy it is to compress it, how much the girth is reduced after healing, how the scar looks, etc.