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Comment on Daisugi, the Japanese technique of growing trees out of other trees (2020)parent

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Are coppicing and pollarding used at all to produce timber? I had the impression that it was done only to make firewood, and was cut repeatedly without letting it grow like described in the article.

Ben Law in the UK used a sweet chestnut coppice as timbers for his house. Done properly coppicing can not only produce renewable and sustainable timber, but it is one of the only woodland management techniques that has significant positive impact on the ecology of the woodland in which it is practiced.

https://ben-law.co.uk/

Some of the big "evil" forestry practices are now known to be helpful. Even clearcutting, if done in strips, is know to open up diverse habitats, replacing a uniform forest with a more varied one more amenable to animals.

I agree. In reality the only "evil" forestry practice in my mind practices are illegal logging. When everything is done by the book (my context is the UK) then there's a 10 year management plan (normally), felling license (always) and a re-stock agreement (always). It's a crop, but the public don't get that message and tend to view harvesting as an ecological tragedy. The clearcutting in strips is referred to as strip felling in the UK. Another one used increasingly more is continuous cover[0].

With a few narrow exceptions most timber crops in the the UK are monocultures or very limited mixes of pines/spruces/firs which outside of nesting season support very limited ecosystem. Even then the management plan for the site would have to account for species present and respond accordingly. Badgers? 20m no go zone from their sett and it may involve another license from Natural England.

I tend to operate at the border of woodland management and forestry. Coppicing typically tends to fall into the woodland management category due to the smaller scale nature of it, especially for when it is for "green woodworking" or craft use. The larger scale biomass coppice sites are very firmly in the forestry size, but still retain the ecological benefits to an extent.

[0]: https://www.forestresearch.gov.uk/research/continuous-cover-...

Coppicing is used for lumber for baskets and other weaving techniques, at least in Appalachia.

It depends of the type of tree. Ash used to be used both for firewood and timber in France. I have ~35 250 year old ash trees like this, a good chunk of the branches are straight, just not as vertical as the ones from the technique above (which looks really neat). Those have not being well cared for by the previous owners though, I'm quite sure that with better care and selection of buds they would have produced more straight branches.

I had first heard of the concept of doing this to trees as it related to the production of arrows...

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