Agapanthus 'Twister' (African lily 'Twister')
'Twister' is a compact, clump-forming, half-hardy, deciduous perennial with broad, strap-shaped, dark green leaves, and, in summer, sturdy, erect stems bearing rounded umbels of trumpet-shaped, white flowers, purple-blue at the base.
Grow in fertile, moist but well-drained soil in full sun. Suitable for growing in a container, especially in areas with cold, wet winters. Apply a deep winter mulch in cold areas. Avoid excessive winter wet. Will reach a height of 0.5m and a spread of 0.4m after 2-5 years.