It was believed that To no imo gave you success in life by making you a head because of the letter 'To' (the head) of 'To no imo,' and blessed you with children because of many baby potatoes they bore.
頭の芋は頭（かしら）になって出世する、芋は子芋を数多く付ける事から子宝に恵まれるとされた。