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TOPIC: How to "raise soil line"?

How to "raise soil line"? 1 year 5 months ago #25176

I have a Jaboticaba bonsai with a "Y" shaped trunk. I wanted to raise the soil line about 2 inches so it touched just below the "V", effectively transforming it into a twin trunk bonsai. I wonder the best way to accomplish that. Thoughts? Pic attached.



The obvious idea is to scrape the trunk at the new desired height, put it into a deeper pot and bury the bottom trunk under soil, hoping the exposed trunk will root. With time I would cut off bottom. Has anyone ever attempted that (with any tree)?

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How to "raise soil line"? 1 year 5 months ago #25177

You mean air layering?
Yes, that should work, plus you can plant the old root system and maybe grow a second tree from it.
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How to "raise soil line"? 1 year 5 months ago #25178

Love this forum. I saw a tree like that today and wondered if air layering would work. Do you have to tourniquet the tree below where you want the new roots to grow?
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How to "raise soil line"? 1 year 5 months ago #25179

Air layering is possible but it will take up to 1,5 years. I Googled that.
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How to "raise soil line"? 1 year 5 months ago #25180

It is kind of air layering but not really. Two main differences. Instead of just wrapping plastic around a small portion of the trunk, i would bury the whole trunk. Also, instead of sphagnum moss, i would use regular bonsai soil. So not sure if these two adaptations would compromise the success of the operation. My main concern is causing rot on the trunk by keeping a good portion under the soil. Thoughts?
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How to "raise soil line"? 1 year 5 months ago #25186

It is what I have done on a number of trees. It is also common practive to get a better rootspread. So yeah, can be done.
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