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.

Cosmos bipinnatus 'Daydream', Front view of one fully open flower with white petals tinged with pink at the centre and yellow stamens, Against soft blue and pink background.

Cosmos bipinnatus 'Daydream', Front view of one fully open flower with white petals tinged with pink at the centre and edges, and yellow stamens, Against soft blue and pink background.

Cosmos bipinnatus 'Daydream', Front view of one opening flower, yellow stamens half hidden by white petals tinged with pink edges, Against soft focus blue background.

Japanese anemone, Anemone x hybrida 'Serenade', Very close side view of one flower, showing yellow stamens surrounded by soft focus pink petals.

Clematis, Clematis 'Ville de Lyon', Close up of purple flower showing yellow stamen.

Spurge, Mediterranean spurge, Euphorbia characias 'Tasmanian Tiger', Front view of one yellow flowerhead emerging from variegated leaves.

Crocus, Snow crocus, Crocus chrysanthus 'Zenith', Close top view of blue flowers with yellow centres.

Tulip, Parrot tulip, Tulipa, Underneath view of single fully open pink flower with yellow at the centre of the petals.

Foxtail Barley, Squirrel tail grass, Hordeum jubatum, Close view of a yellow seedhead forming and covered with raindrops on the fine hairs.

Dogwood, Wedding cake tree, Cornus controversa 'Variegata', View through several interwoven branches sporuting new shoots of yellow and green variegated leaves, to a mass of blue forget-me-nots, Myoso...