billygoat weed or ageratum conyzoides bush

ageratum conyzoides billygoat-weed chick weed goatweed whiteweed mentrasto native tropical america brazil invasive regions herb 0 5–1 high ovate leaves 2–6 long flowers white mauve vietnam plant called pig feces flowera growth dirty areas medicinal used traditional cultures dysentery diarrhea insecticide nematicide