Masses of red fake synthetic red tulip heads creating a pattern.

Masses of red and white fake synthetic red tulip heads creating a pattern against blue sky.

Palm, Fan palm, Close view of leaves backlit against the greenhouse window of Kew garden's Palm House, creating a pattern of green and light.

Switch grass, Panicum virgatum 'Rehbraun', A mass of panicles of tiny flowers and leaves turning red, interwoven into an abstract pattern.

Switch grass, Panicum virgatum 'Rehbraun', A mass of panicles of tiny flowers and leaves turning red, interwoven into an abstract pattern.

Fern, Detail of green leaves showing pattern.

Tree fern, Cycad, Close up showing keaf pattern, Madeira.

Tree fern, Cycad, Close up showing keaf pattern, Madeira.

Tree fern, Cycad, Close up showing keaf pattern, Madeira.

Cherry plum, Prunus cerasifera 'Nigra', Front view of a twig with pale pink blossom and bronze leaves with others soft focus behind, forming a pattern againt a white background.

Great desert spoon, Dasyliron achrotrichum, Dramatic spikey mass of silvery narrow leaves standing out against a dark background.

Houseleek:Sempervivum tectorum, Several varieties laid in a pattern on a moss covered chair with Lamb's ears, Stachys bizntina leaves. Part of the RHS Hampton Court flower show 2010 from the Tradition...