Ireland, County Monaghan, Tullyard, Trees on crest of hill covered in hoar frost on outskirts of Monaghan town, part framed by branches in foreground.

Ireland, County Sligo, Markree Castle Hotel, Trees covered in hoar frost.

Ireland, County Sligo, Markree Castle Hotel, Trees covered in hoar frost.

Ireland, County Monaghan, Rossmore Forest Park, Winter sun rays shining through part silhouetted conifer trees.

USA, California, Joshua Tree National Park, Joshua trees, Yucca brevifolia, in barren landscape with dramatic cloud formations in blue sky above.

USA, California, Joshua Tree National Park, Joshua trees, Yucca brevifolia, in barren landscape with dramatic cloud formations in blue sky above.

USA, California, Joshua Tree National Park, Joshua trees, Yucca brevifolia in barren landscape with domed rock formation behind.

West Indies, Windward Islands, Grenada, Callaloo crop growing beside banana trees in the countryside of St John parish

West Indies, Windward Islands, Grenada, Callaloo crop growing beside banana trees in the countryside of St John parish

Abstract.

Tree.

Phlox, Perennial phlox, Phlox paniculata 'Uspekh', Close view of the clusters of pink flowers with white centres.

Grass, Feathertop grass, Pennisetum villosum, Long hair like spikelets reaching out from a flower, looking like a communication network.

Eulalia 'Malepartus', Miscanthus sinensis 'Malepartus', Several fluffy flowering stems against blue sky.

Echinacea, Purple coneflower, Echinacea purpurea 'De Donkeute Steel', Close cropped view of a single flower.

Echinacea, Purple coneflower. Echinacea purpurea 'Rubinstern', Close view of a single flower, with one behind in soft focus.

Dogwood, Flowering Dogwood, Kousa dogwood, Cornus kousa, A small branch with autumn leaves backlit in low sunlight.

Yucca, Yucca aloifolia 'Vittorio Emanuele II', Close up of the white flowers.

Oak, Quercus robur, Spangle galls, Neuroterus quercusbaccarum on common oak, Close view of two backlit leaves showing the eggs of this parasitic wasp.

Oak, Quercus robur, Spangle galls, Neuroterus quercusbaccarum on common oak, Close view of two backlit leaves showing the eggs of this parasitic wasp.

Helen's flower, Sneezeweed, Helenium 'Moerheim Beauty', Close view of a flower with others in soft focus behind.

Mountain witch alder, Fothergilla major, Close view of a couple of yellow autumn leaves.

Spindle Tree, Euonymus hamiltonianus 'Pink delight', Seed capsules on branch.