Dahlia, Various colours of flowers growing outdoor in garden.

Dahlia, Close-up view of pink coloured flowers growing outdoor.

Dahlia, Single white 'pom-pom' flower growing outdoor showing petal pattern.

Dahlia, Purple coloured single 'Pom Pom' flower growing outdoor.

Dahlia, Purple coloured single 'Pom Pom' flower growing outdoor.

Dahlia, Pink coloured 'Pom Pom' flower growing outdoor.

Dahlia, Close-up detail of purple coloured flower showing petal pattern.

Dahlia , Close-up detail of pink coloured flower showing petal detail pattern.

Dahlia, Pompon Dahlia, Dahlia 'Jan van Scheffelaar, Several stems of the pink globe shapes flowers----

Dahlia, Pompon Dahlia, Dahlia 'Jan van Scheffelaar, Several stems of the pink globe shapes flowers----

Dahlia, Pompon Dahlia, Dahlia 'Jan van Scheffelaar, Several stems of the pink globe shapes flowers----

Dahlia 'Bishop of Auckland', single red flower showing yellow stamen and dark purple leaves.