Oak, Common oak, Quercus robur, Side view of fairly mature tree with no leaves, silhouetted against the misty dawn sky in an English field.

Oak, Common oak, Quercus robur, Side view of fairly mature tree with no leaves, silhouetted against the misty dawn sky in an English field.

Oak, Common oak, Quercus robur, Side view of fairly mature tree with no leaves, silhouetted against the misty dawn sky in an English field.

Forest pansy, Cercis canadensis.

Forest pansy, Cercis canadensis.

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

Chelsea Flower Show 2013, M&G Centenary, Designer Roger Platts. Gold medal

Chelsea Flower Show 2013, M&G Centenary, Designer Roger Platts. Gold medal

Chelsea Flower Show 2013, M&G Centenary, Designer Roger Platts. Gold medal

Poplar, Populus andalucia.

Lily, Forest lily, Veltheimia bracteata.

Skunkcabbage, Lysichiton americanus.

Smokebush, Cotinus coggygria 'Grace'.