These are derived from the 1,000 cherry trees that were planted in the shrine grounds by Emperor Kazan in the mid Heian period and the lavish festival held by Imperial order on the 10th day of the 4th month of 985 continues today as the Hirano Sakura-matsuri Festival.
平安時代の中ごろ花山天皇によって境内に数千本の桜が植えられたのが起源で、寛和元年（985年）4月10日に臨時勅祭が開かれ、平野桜祭りとして今に残る。