Agapanthus africanus, Close view of blue purple flowers about to emerge, growing in an umbel shape, against agrey background.

Allium sphaerocephalon, A single purple spherical flower on a stem isolated in shallow focus against green leaves.

Agapanthus africanus, Close view of blue purple flowers about to emerge, growing in an umbel shape, against green background.

Agapanthus africanus, Close view of blue purple flowers about to emerge, growing in an umbel shape, against green background.

Agapanthus africanus, Close view of blue purple flowers emerging from sheath.

Agapanthus africanus, Close view of blue purple flowers emerging from sheath.

Agapanthus africanus, Close view of blue purple flowers with prominent yellow stamen..

Agapanthus africanus, Blue purple flowers on an umbel shaped flowerhead forming a pattern against a white background.

Aster tongolensis 'Berggarten', Close up of mauve flower with masses of orange stamen.

Purple coneflower, Echinacea purpurea 'Magnus', Close view of central mound of green orange tipped stamens,

Purple coneflower, Echinacea purpurea 'Magnus', Close view of central mound of green orange tipped stamens forming a concentric pattern.

Allium 'Gladiator', Close up detail of mass of pink star shaped flowers.