Markus Varesvuo / Black woodpecker (Dryocopus martius) male perched on tree trunk, trees covered in hoar frost. Kuusamo, Northern Ostrobothnia, Finland. February. Commended in the Birds in the Environment Category of t...

Erlend Haarberg / Norway spruce trees (Picea abies) covered in snow and frost, at sunrise, Mellan-Stubba, Stubba Nature Reserve, Lapland, Sweden, February 2013.

Theo Bosboom,Theo Bosboom / Plant covered in with hoarfrost, reflected in water, Schiermonnikoog, the Netherlands, March 2013

Theo Bosboom / Reed and Willows (Salix sp) with hoarfrost, Weerribben-Wieden National Park, the Netherlands, December 2007

John Cancalosi / Hoarfrost covering seedhead, Warwickshire, England, UK

Markus Varesvuo / Black woodpecker (Dryocopus martius) male perched on tree trunk, trees covered in hoar frost. Kuusamo, Northern Ostrobothnia, Finland. February.

Ingo Arndt / Winter landscape with hoarfrost, Germany

Ingo Arndt / Winter landscape with hoarfrost covering grass and tree, Germany

Ingo Arndt / Hoarfrost on umbellifer plant, Hohe National Park, Tauern, Austria

Heike Odermatt / European Beech (Fagus sylvatica) forest with hoarfrost, Vosges, Alsace, France

Pascal Tordeux / Freezing fog causing frost to crystalise on Pine trees, Picardy, France, January.

Pascal Tordeux / European white elm (Ulmus laevis) tree covered by hoarfrost, Picardy, France, January.