 It is not generally planted, but is considered a valuable herb when found growing in a pasture.It has become naturalised in North America, particularly in the west and south of the continent.Hop trefoil, "Trifolium campestre", may be confused with other plants that have three leaflets and small yellow flowers, such as large hop trefoil ("T. aureum"), lesser hop trefoil ("T. dubium"), black medick ("Medicago lupulina"), and yellow woodsorrel ("Oxalis stricta").