Nick Upton / Cornish heath (Erica vagans) clump flowering on montane pastureland, above the Lakes of Covadonga, at 1300m, Picos de Europa, Asturias, Spain, August.

Bernard Castelein / Heather (Calluna vulgaris) at dawn, with distant trees, Klein Schietveld, Brasschaat, Belgium

Bernard Castelein / Heather (Calluna vulgaris) at dawn, with distant trees, Klein Schietveld, Brasschaat, Belgium

Bernard Castelein / Deergrass (Scirpus cespitosus) at dawn among Heather (Calluna vulgaris), Groot Schietveld, Wuustwezel, Belgium

Bernard Castelein / Oak (Quercus robur) in Heather (Calluna vulgaris) at sunrise, Klein Schietveld, Brasschaat, Belgium

Yva Momatiuk & John Eastcott / Heather (Calluna sp) flowering in tundra, Skaftafell National Park, Iceland

Tim Fitzharris / Rhododendron (Rhododendron sp) flowers and Coast Redwood (Sequoia sempervirens) trees in fog, Redwood National Park, California

SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) amongst Bell heather (Erica cinerea) Cairngorms National Park, Highlands, Scotland, August.

Floris van Breugel / Manzanita (Arctostaphylos glauca) bark detail, San Gabriel Mountains, California, USA February

Jeff Foott / Pacific Rhododendron (Rhododendron macrophyllum) flowering in old growth Coast Redwood (Sequoia sempervirens) forest, Redwood National Park, California

Alex Hyde / Emperor moth (Saturnia pavonia) female wide angle view showing heather moorland habitat. Peak District National Park, UK. April.

Sandra Bartocha / Silver birch (Betula pendula) with Heather (Calluna vulgaris) in full bloom, Reicherskreuzer Heide, Nature Reserve Schlaubetal, Germany, August.