Common Hogweed. Heracleum sphondylium, single ragged stem covered with snow at sunset.

Wild yellow woodland Tulip, Tulipa sylvestris, growing among grass.

Wild yellow woodland Tulip, Tulipa sylvestris, growing among grass.

Tulip, Tulipa, close up of yellow petals showing the base of the flower.

Senetti, Pericallis x hybrida 'Senetti Magenta Bicolor', close view with raindrops.

Peace rose, Rosa 'Peace', close up with a dreamy soft focus.

Rose, Rosa, close up detail of red flower showing petal pattern.

Rose, Rosa, black & white side view against a manuscript background.

Pasqueflower, Pulsatilla vulgaris, single flower not quite open, backlit in early morning sunlight.

Pasqueflower, Pulsatilla vulgaris, single flower in the bottom left of the frame backlit in early morning sunlight.

Pasqueflower, Pulsatilla vulgaris, single flower with raindrops and foliage against a white background.

Pasqueflower, Pulsatilla vulgaris, single flower shot in a dreamy soft focus style in a golden background,

Allium, Allium Hollandicum 'Purple Sensation', flowers emerging from bud.

Aeonium, Tree aeonium, Aeonium arboreum, close up showing pattern.

Aeonium, Tree aeonium, Aeonium arboreum, close up showing pattern.

Maple, Pere David's Maple, Acer davidii, new growth.

Hyacinth, Hyacinthoides orientalis 'Blue pearl', single stem against a solid black background.

Daffodil, Narcissus 'Dutch Master', straight on shot of a single flower against solid black background.

Daffodil, Narcissus 'Dutch Master', straight on shot of a single flower against solid black background.

Easter lily, Lilium longiflorum, single flower hanging down against a flat green background.

Easter lily, Lilium longiflorum, single flower hanging down showing stamen inside with light green background.

Cherry, Prunus, showing the difference between the defoliated tree above the trail and the healthy one below and the pollution from the aircraft flying over London?s East End.

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

Common oak, Quercus robur, leaves infested with the common spangle gall caused by the cynipid wasp.