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> Done right, the technique can prevent deforestation and result in perfectly round and straight timber

It's annoying that this doesn't explain what the hell "done right" means. What does one have to "do right" to get perfectly round and straight timber out of it? Graft the right tree?

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There's more info in the Twitter thread (https://twitter.com/wrathofgnon/status/1250287741247426565). Patience and pruning every two years are key!

Also (this is easy to miss) the technique is performed only on clones of one mutant Sugi tree (Japanese "cedar", actually more closely related to redwoods but it's its own genus).

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