Agapanthus africanus (African lily; syn. Agapanthus umbellatus) is a native of the Cape of Good Hope in South Africa.
It has a short stem bearing a tuft of long, narrow, arching leaves 10–35 cm long and 1–2 cm broad, and a central flower stalk 25–60 cm tall, ending in an umbel of 20-30 white, or bright blue, funnel-shaped flowers, each flower 2.5–5 cm diameter.
Read more about Agapanthus Africanus: Cultivation