witchgrass References Images witchgrass plant Ask Anything Homework Help Also known as: Panicum capillare Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: panicumWitchgrass (P. capillare), a tufted annual, is a common weed in fields and disturbed areas. Its large purplish flower clusters break off and are blown by the wind. Read MoreWitchgrass (P. capillare), a tufted annual, is a common weed in fields and disturbed areas. Its large purplish flower clusters break off and are blown by the wind. Read More