Stunning architectural plant for the back of the border to add height and drama. Plum purple flowers on red tinted stems during August and September. Deeply cut leaves. Prefers a moist fertile soil in sun/part shade. Dead head after flowering - if allowed to seed the plant will die as it is more biennial than perennial and does not self seed easily. Ht 1.8,m (6ft) x 1.2m wide (4ft).