Knapweed, Centaurea nigra, Close up of spikey pink coloured flowerhead against black.

Echinacea, Purple coneflower, Echinacea cultivar, Close up of flower head with orange coloured petals.

Viola, Viola x wittrockiana 'Deltini Honey Bee', Close front view of three flowers with splashes of burgundy and yellow, overlapping in a line and dusted with frost.

Lilac, Syringa vulgaris, Close view of a flowering head with a mass of mauve florets, Green background.

African daisy, Osteospermum 'Serenity purple', Close side view of one closed flower with raindrops.

African daisy, Osteospermum 'Serenity purple', Back view of one opening flower with raindrops on a curved stem.

African daisy, Osteospermum Flower Power 'Double Berry White', Front view of one flower with white petals tipped with burgundy and central cluster of burgundy petals, Against pale pink.

Purple viper's bugloss, Echium plantagineum with pink Lathyrus tingitanus, Tangier pea, red opium poppy growing in a meadow in La Gomera in the Canary Islands.

Algerian iris, Iris unguicularis, Close cropped view of purple petal with yellow and white markings against pale blue background.

Algerian iris, Iris unguicularis, Close cropped view of purple petal with yellow and white markings against pale lilac background.

Greater Knapweed, Centaurea scabiosa, Front view of one flower showing spidery fringed petals, Soft focus stem, Against white background.

Red cabbage, Brassica oleracea capitata, Very close abstract view of slice through cabbage forming purple and white pattern.