Portrait from the Hayashibara Museum of Art
Ikeda Tsugumasa (1702-1776) (?) was a daimy? of Okayama during the Edo period of Japan, and head of the Ikeda clan. He was the father of Ikeda Munemasa, who would become daimy? following his father's retirement in 1752. His father was Ikeda Tsunamasa, and Tsuguasa made additions to the K?raku-en gardens that his father built in Okayama. His childhood name was Shigetaro () later Minechiyo ().
He was in contact with the Rinzai monk Hakuin Ekaku, whom he first heard lecture on the Diamond S?tra in Okayama in 1751. Hakuin wrote the kana h?go Yabukôji for the Lord, and Hebi ichigo ().
The Lord of Okayama Castle is Ikeda Tsugumasa (1702-1776). He retired in the twelfth month of 1752.
Although the Daimyo's name is deleted from the printed edition of the book, we know from the surviving manuscript that he was Lord Ikeda Tsugumasa (1702-1776), the Daimyo of Okayama.
Yuishinzan Hill was built when Ikeda Tsugumasa took over from his father Ikeda Tsunamasa. It changed the flat landscape of the garden, giving it a more sculptured aspect. Yuishin-do is located on one side of the hill, and plants such as azaleas and rhododendrons are planted there to match the rock work on the slopes. Their seasonal red and white flowers adorn the area.
"Spearflowers" was originally a letter to Tsugumasa Ikeda, Lord of Okayama, Bizen Provence. Ikeda first heard Hakuin lecture on a twelfth-century Chinese commentary on the Diamond S?tra in Okayama in 1751
A kana h?go written by Hakuin Ekaku (1685-1768) for Ikeda Tsugumasa (1702-1776), the daimy?, or lord of Okayama in 1753.
This work is written in the form of a letter to Ikeda Tsugumasa, daimy? of the Okayama domain.