The custom of kneading
Japanese mugwort was adopted from the Chinese. Documents state that nobles ate kusa mochi during palace events in the
Heian era. Another purported reason for the change in ingredients was because Jersey cudweed is called
Haha-ko-gusa which literally translates to "mother-and-child grass". As kusa mochi was enjoyed with a purpose of wishing for the health and well-being of mother and her children, it was considered ominous to knead jersey cudweed into the
mochi. Since the
Edo-era, kusa mochi began to be used as offering for
Hinamatsuri (the Girl's Festival). The reason it was chosen as the offering was because of the vivid green color that represents fresh verdure. Japanese mugwort is known for its vitality, which makes it difficult to eradicate. Kusa mochi was used as an offering that wishes health and longevity. == As medicinal food ==