The reason for worshipping in spring and autumn is thought to be due to the belief that agriculture gods descend the mountains to the paddy fields at the beginning of the rice growing season in spring and return to the mountains in autumn, and, as has been described above, yashiki-gami are believed to be closely related to agriculture gods.
春秋に祀るのは、山の神が稲作の開始とともに田に降りて農耕神となる春と、稲作が終わり田の神が山に帰っていく秋に対応しているからだと考えられ、既に述べたように屋敷神と農耕神は深い関わりがあると考えられている。