A clump-forming perennial with strap-shaped deep green leaves. Clusters of open bell-shaped, deep purple flowers - a new colour for agapanthus! Photo provided by: Just Must Perennials...

A narrow, erect, woody-based perennial with light green leaves and open funnel-shaped bright pink-purple flowers from early summer into autumn. Photo provided by: NeweyPPL...

Perennial with silver green foliage and short spikes of burgundy-wine flowers. Photo provided by: Barnes Nurseries...

A bold perennial with pleated, sword-like mid-green leaves. Arching, branched spikes of upward-facing, funnel-shaped, burnt orange-red flowers. Photo provided by: Howard Nurseries Ltd...

An upright perennial with mid-green leaves and rounded clusters of star-shaped white flowers with a silver hue. Photo provided by: Jelitto Staudensamen GMBH...