Achillea 'Cassis'

Upright, clump-forming hybrid yarrow with deeply-dissected, fern-like, aromatic, green gray foliage and long-lasting, bright red flowers which appear in dense, flattened, plate-like, compound clusters throughout the summer on erect stems. Best grown in lean, dry to medium moisture, well-drained sandy loams in full sun. Does well in average garden soils and tolerates poor soils. Avoid heavy clays and moist, rich, fertile soils. Deadhead spent flower heads to promote additional bloom. Divide clumps as needed to reinvigorate plantings.