According to "Nihon Kiryaku" (the Abstracted Records of Japan), a new mandarin orange tree having a height of 12 feet was transplanted on December 7, 959; it was the tree of Prince Higashi-Sanjo, Danjonokami, Governor of the Impeachment Office, and it was planted under the Emperor's ordinance.
『日本紀略』によれば、天徳3年（959年）12月7日あらたに橘樹1本、高さ1丈2尺を植え替え、これは弾正尹親王東三条殿の樹で、勅命によった。