Green-Headed Coneflower (also known as Cutleaf Coneflower or Tall Coneflower) features 3.5" wide yellow daisy-like flowers with with green center disks. Average height between 3-4 feet in cultivation, but in the wild can get up to 9 feet tall! Great pollinator plant. Traditionally used as a potherb, to treat worms and for gastric distress. Long mid to late summer bloom period. Hardy in zones 3-9. North American Native.