Ancient Japanese Forestry Technique Produces Lumber Without Cutting Down Trees

August 29, 2020 at 11:26 am

These Japanese cedar trees are pruned in a way that produces lumber faster and stronger than standard cedar without cutting down any trees!

In response to a lumber shortage in Japan in the 1300s, arborists discovered a way to grow trees faster than ever, on the tops of already-existing trees.

Because of a shortage of saplings, the lack of flat land, and the difficulty of planting in the steep slopes in the region of Kitayama, the people there developed a new method of raising lumber.

It’s called daisugi. It’s similar to the bonsai method of shaping trees, only it’s done on much larger trees.

Instead of cutting trees down they heavily pruned existing cedar trees, leaving only the branches that grew straight up.

The result is tall vertical “shoots” that look like  whole new trees. They produce perfectly straight, uniform, knot-free lumber that is twice as strong and 140% more flexible than standard cedar.

The wood is denser and grows to maturity much faster than normal cedar trees — just 20 years.

The daisugi method reduces the need for lumber plantations and preserves old growth trees, while creating better lumber faster.

its a win-win for the environment and the lumber industry.