Rose mallow, Hibiscus syriacus 'Blue Bird', purple blue buds opening among green leaves on a shrub.

Rose mallow, Hibiscus syriacus 'Blue Bird', purple blue flower and bud growing on a shrub against a green background.

Summer hyacinth, Galtonia candicans, emerging flowers on a single stem.

Summer hyacinth, Galtonia candicans, Pendulous white flowers growing on a plant outdoors.

Summer hyacinth, Galtonia candicans, Pendulous white flowers growing on a plant outdoors against a blue sky.

Summer hyacinth, Galtonia candicans, Pendulous white flowers growing on a plant outdoors.

African lily, Agapanthus, white flowers emerging on an umbel shaped flowerhead against a green background.

Montbretia, Crocosmia 'Lucifer', Green seed pods isolated in shallow focus.

Ornamental onion, Allium, single purple flower on a stem isolated in shallow focus against green leaves.

Rose mallow, Hibiscus syriacus 'Blue Bird', single purple blue flower growing on a shrub.

Rose mallow, Hibiscus syriacus 'Blue Bird', purple blue flower and buds growing on a shrub against a green background.

Rose mallow, Hibiscus syriacus 'Blue Bird', single purple blue flower growing on a shrub against a green background.