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Daisugi the Japanese Technique of Trees Out of Trees, Making Exact Straight Wood

Hacker News · Jun 28, 2026, 4:28 PM

Key takeaways

  • Their devel­op­ment required the kind of ded­i­cat­ed crafts­man­ship that takes gen­er­a­tions to cul­ti­vate — but also, more prac­ti­cal­ly speak­ing, no small amount of wood.
  • These tea­hous­es are still promi­nent in Kyoto, a city still known for its tra­di­tion­al cul­tur­al her­itage, and not coin­ci­den­tal­ly where daisu­gi first devel­oped.
  • Of how many forestry tech­niques can we say the same?

Their devel­op­ment required the kind of ded­i­cat­ed crafts­man­ship that takes gen­er­a­tions to cul­ti­vate — but also, more prac­ti­cal­ly speak­ing, no small amount of wood. By the 15th cen­tu­ry, Japan already faced a short­age of seedlings, as well as land on which to prop­er­ly cul­ti­vate the trees in the first place. Neces­si­ty being the moth­er of inven­tion, this led to the cre­ation of an inge­nious solu­tion: daisu­gi, the grow­ing of addi­tion­al trees, in effect, out of exist­ing trees — cre­at­ing, in oth­er words, a kind of giant bon­sai.

“Writ­ten as 台杉 and lit­er­al­ly mean­ing plat­form cedar, the tech­nique result­ed in a tree that resem­bled an open palm with mul­ti­ple trees grow­ing out if it, per­fect­ly ver­ti­cal,” writes Spoon and Tam­ago’s John­ny Wald­man. “Done right, the tech­nique can pre­vent defor­esta­tion and result in per­fect­ly round and straight tim­ber known as taru­ki, which are used in the roofs of Japan­ese tea­hous­es.”

These tea­hous­es are still promi­nent in Kyoto, a city still known for its tra­di­tion­al cul­tur­al her­itage, and not coin­ci­den­tal­ly where daisu­gi first devel­oped. “It’s said that it was Kyoto’s pre­em­i­nent tea mas­ter, Sen-no-rikyu, who demand­ed per­fec­tion in the Kitaya­ma cedar dur­ing the 16th cen­tu­ry,” writes My Mod­ern Met’s Jes­si­ca Stew­art.

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