Echinacea angustifolia plant, is also known as Narrow-leaved Coneflower and Sampson. Echinacea is well known for the immune building and antibiotic properties of the roots. Echinacea angustifolia plant is native to north west America and prefers deep rich loam in an open, sunny position. Frost resistant but drought tender. A perennial plant, growing to 1m x 1m.