sentences:  Hemlock water dropwort grows well in the wetter areas and is best left alone as the name hemlock suggests.The large leaves of the butterbur (Petasites hybridus) are found in several areas; its name harkens back to the days before clingfilm or cheap paper when the leaves were used to wrap butter destined for the market.Water ragwort (or Saracen's ragwort) (a species of Senecio) is an introduced plant that grows along the Garnock in tall stands.