Koshouji's Kaya

At Takakatsu-ji, an ancient temple of the Shingon sect in Sakahama, there is a Japanese cedar tree designated as a natural monument by Tokyo Metropolis. This cedar tree, towering behind the main hall, is a female tree, approximately 25 meters tall with a circumference of 6.3 meters at breast height, making it one of the largest cedar trees in the city. According to surveys, it is said to be the 12th largest tree in Japan.
The thickness of the trunk is overwhelming to those who see it, evoking a sense of long history. Although there are some slight indentations, the beautifully cylindrical trunk rises straight for about 8 meters. However, the upper part has been lost due to repeated lightning strikes, and currently, five large branches are spreading out.
In 1988, due to noticeable decline in the tree's vigor from several lightning strikes and railway construction, preservation measures for revitalizing the tree were implemented. A protective fence was established to prevent trampling around the tree, and supports were erected for the branches to ensure their protection. Additionally, treatment of decayed areas and dead branches, injection of nutrients, and soil improvement around the tree have gradually restored its vigor.
The cedar tree is an evergreen tall tree of the Taxaceae family, known for its many uses since ancient times. It is planted as a garden tree and in temple grounds, and is also used as material for construction and sculpture. It is also known for its high demand as a board for Go and Shogi. The hot seeds in autumn are also edible.
The illustration below is an old map depicting Takakatsu-ji and its surroundings. You can see the large cedar tree towering in front of the main hall, which faces west, contrary to its current orientation. Although the approach, temple layout, and surrounding scenery have changed significantly, the cedar tree remains in its original form.