餅もち草ぐさもちぐさMeanings1nounJapanese mugwortRefers specifically to Artemisia princeps, a plant used in traditional Japanese confectionery and herbal medicine. Also known as 蓬 (よもぎ).See also: 蓬餅もち草ぐさは草くさ餅もちの材ざい料りょうとして使つかわれる。Japanese mugwort is used as an ingredient in kusa mochi.