This grower is sure of this plant identification.
Deep blue flowers, very large heads, tall. Jul-Sep.
African lily, Lily-of-the-Nile, Love flower
Agapanthus genus (African lily). These are clump-forming perennials, some of which are evergreen with upright stems. The leaves are strap-shaped; the narrow-leaf forms are frost hardy and the broad leaf ones are half hardy. They will produce large umbels of bell to tubular-bell shaped or trumpet shaped flowers, that will bloom in shades of white, blue and purple. The seedheads are also ornamental.
Protect crowns in the winter with a mulch. Suitable for coastal conditions.
Ornamental, containers, borders.