Potentilla reptans, known as the creeping cinquefoil,European cinquefoilorcreeping tormentil in my garden June 2018.Apparently, “Alcoholic extracts from roots of Potentilla reptans showed a moderate antimicrobial activity against common wound pathogens”, according to, Watkins F, Pendry B, Sanchez-Medina A, Corcoran O (November 2012). “Antimicrobial assays of three native British plants used in Anglo-Saxon medicine for wound healing formulations in 10th century England”