Achillea ptarmica

Achillea ptarmica or Sneeze wort is a perennial wildflower best suited to damp and often heavy soils and is ideal for pond margins The flowers are produced in June through to August and are clusters of creamy white atop finely toothed dark green leaves This showy wildflower makes considerable root systems and this makes it a valuable bio-remediation species where soil erosion is an issue.