Asters, Asteraceae, Close-up view of flowers with yellow stamen growing outdoor.

Asters, Asteraceae, Close-up view of two purple flowers with yellow stamen.

Asters, Asteraceae, Close-up view of two purple flowers with yellow stamen.

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

Hydrangea, Hydrangea Macrophylla, A bee on the yellow Hydrangea in garden.

Acer, Maple Leaves, Autumnal yellow acer leaves on the trees at Batsford Arboretum, Worcestershire.

Acer, Maple Leaves, Autumnal yellow acer leaves on the trees at Batsford Arboretum, Worcestershire.

Dahlia, Mass of orange coloured flowers growing outdoor.

Dahlia, Dahlia Dissecta, Yellow coloured flower growing outdoor.

Sunflower, Helianthus, Bee on flower growing outdoor in a field.

Rose, Rosa, Close-up of yellow coloured flower growing outdoor.

Sunflower, Helianthus, Unopened sunflowers heads growing outdoor.