comfrey /ˈkʌm.fɹi/ noun1 •Any of several species of perennial herbs of the genus Symphytum, often specifically common comfrey (Symphytum officinale).It thrives on compost and natural fertilizers brewed from comfrey or seaweed and uses only rain, natural groundwater or wastewater purified through a system of reed beds. — 2007 formscomfreys
