Description Agapanthus umbellatus ‘Blue Umbrella’ A clump-forming, evergreen perennial with broad, arching, strap-shaped, glossy, dark green leaves and sturdy, erect stems bearing large, rounded heads of trumpet-shaped, violet-blue flowers in summer. Grow in moist, fertile, but free draining soil in full sun. It will reach a height of 1m and a spread of 60cm.
