Sonchus wilmsii is a species of flowering plant in the family Asteraceae and is endemic to southern Africa. It is an erect, perennial herb that typically grows of up to about .[1] This species was first formally described in 1925 by Robert Elias Fries in Acta Horti Bergiana and it grows in grassland in Cape Provinces, Free State, KwaZulu-Natal, Lesotho, Mozambique, Northern Provinces and Eswatini in southern Africa.