Rose, Rosa 'The generous gardener', a single bud close up with soft focus background.

Rose, Rosa 'The generous gardener', a single bud close up with soft focus background.

Giant chinese quince, Chaenomeles cathayensis. A cluster of ripe fruit on a branch in autumn.

Japanese knotweed, Fallopia japonica behind a red plastice barier fence saying 'Do not Enter' in an East London suburb.

Rosebay willowherb, Chamerion augustifolium, growing wild in Holkham, Norfolk, England.

Poppy, Papaver rhoeas in a wild flower meadow.

Peony, Paeonia, close up detail of the flower.

Peony, Paeonia, Close up of the flower showing stamen.

Viola, single flower with white and purple petals covered in tiny insects.

Balloon flower, Platycodon grandiflorus 'Hakone White', flower stem with large, white, double petalled flowers.

Petunia, large, white, trumpet shaped flowers scattered with raindrops.

Virginia Bluebell, Mertensia virginica, flower stem with clusters of funnel shaped, pale blue flowers. More growing behind.