Daisugi (台杉) is a Japanese technique similar to coppicing, used on Cryptomeria (Sugi) trees. The term roughly translates to "platform cedar".

Shoots from the base of the tree are pruned so that the trunk stays straight. It is believed that the production of logs by daisugi began in the Muromachi period. At that time, the tea ceremony became popular in part because daisugi logs were used in tea room construction, for example for the tokonoma alcove. The Kitayama area of Kyoto became especially known for its forestry of daisugi.

This technique results in a harvest of straight logs without having to cut down the entire tree. Although originally a forestry management technique, daisugi has also found its way into Japanese gardens.

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