Glory bush, Tibouchina urvilleana, Purple flower with prominent stamen on an evergreen shrub.

Icelandic poppy, Papaver nudicaule, Close-up detail of a single orange flower with yellow stamen against a green leafy background.

Boston ivy, Parthenocissus tricuspidata, Close-up detail of green leaves turning red and yellow in autumn.

Bear's breeches, Acanthus mollis, Side view of seedhead bearing bright green fruit containing seeds on a plant in autumn.

Spinach, Spinacia oleracea, Close-up detail of a green vegetable leaf in sunlight.

Nasturtium, Tropaeolum majus, Close up of green leaves showing the white veins.

Oak, Quercus robur, Acorns growing on the branches of tree in late summer.

Blackthorn, Prunus spinosa, Abundant purple sloe berries growing on a shrub in the autumn in the New Forest.

Blackthorn, Prunus spinosa, Abundant purple sloe berries growing on a shrub in the autumn in the New Forest.

Rose mallow 'Blue Bird', Hibiscus syriacus 'Oiseau Bleu', A single purple blue flower with white stamens.

Rose mallow 'Blue Bird', Hibiscus syriacus 'Oiseau Bleu', Purple blue buds opening among green leaves on a shrub.

Summer hyacinth, Galtonia candicans, Pendulous white flowers with black tipped stamens.