Bluebell, Hyacinthoides Non-Scripta, Close-up of mauve coloured flower growing outdoor.

Scabious, Scabiosa, Close up of scabious growing in wild flower meadows.

Scabious, Scabiosa, Close up of scabious growing in wild flower meadows.

Salvia, Wild Salvia, Blue Sage, Salvia Patens, Mass of purple flowers growing outdoor in field of buttercups.

Love-in-a-mist, Nigella damascena, Detail of blue coloured flowers growing outdoor.

Monkshood, Aconitum axiliflorum, detail of blue coloured flowers growing outdoor.

Japanese roof iris, Iris tectorum, Blue coloured flower growing outdoor.

Japanese roof iris, Iris tectorum, Blue coloured flower growing outdoor.

Bristle-pointed iris, Iris setosa, Blue coloured flower growing outdoor.

Bristle-pointed iris, Iris setosa, Blue coloured flower growing outdoor.

Vasevine, Clematis viorna, Single purple coloured flower growing outdoor on the plant.

Iris, Japanese iris, Iris laevigata, Single blue coloured flower growing outdoor in field of grass.