Floris van Breugel / Trunks of Californian Redwood trees (Sequoia sempervirens) and blooming Rhododendron, Redwood National Park, Califorina, USA, June 2008.

Stephen Dalton / Red-banded / Rhododendron leafhopper {Graphocephala coccinea} pre-flight jump, UK

Wild Wonders of Europe / Zupanc / Rusty leaved alpenrose (Rhododendron ferrugineum) flower, Triglav National Park, Slovenia, July 2009

Inaki Relanzon / Estanys de la Pera / La Pera lakes, and Alpine rose (Rhododendron ferrugineum). La Cerdagna, Pyrenees, Catalonia, Spain. June 2006

Inaki Relanzon / Alpine rose (Rhododendron ferrugineum) with waterfall in the background, La Cerdagna, Pyrenees, Catalonia, Spain. June 2006

Wild Wonders of Europe / Benvie / Alpenrose (Rhododendron ferrugineum) in flower, Naturpark Kaunergrat, Tirol, Austria, July 2008

Wild Wonders of Europe / Popp / Mountain forest with flowering Rhododendron, Mtirala National Park, Georgia, May 2008

Wild Wonders of Europe / Popp / Old Beech tree (Fagus sp) with Rhododendron growing on it's trunk, Mtirala National Park, Georgia, May 2008 WWE BOOK PLATE.

Wild Wonders of Europe / Popp / Flowering Rhododendron in old growth forest, Borjomi Kharagauli National Park, Georgia, May 2008

Wild Wonders of Europe / Schandy / Caucasian rhododendron (Rhododendron caucasium) flowers with Mount Elbrus in the distance, Caucasus, Russia, June 2008 (Exclusive Japanese calendar rights for 2014)

Wild Wonders of Europe / Schandy / Caucasian rhododendron (Rhododendron caucasium) with Mount Elbrus in the distance, Caucasus, Russia, June 2008

Wild Wonders of Europe / Schandy / Caucasian rhododendron (Rhododendron caucasium) flowers with Mount Elbrus in the distance, Caucasus, Russia, June 2008

Wild Wonders of Europe / Schandy / Caucasian rhododendron (Rhododendron caucasium) flowers with Mount Elbrus in the distance, Caucasus, Russia, June 2008

Konstantin Mikhailov / Dombai-Ulgen peak with Rhododendron luteum plant, Teberdinskii reserve, NW Caucasus, Russia.

Michael Durham / Bumblebee (Bombus huntii) flying toward the camera after collecting nectar from a Rhododendron flower, northeast Oregon

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

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

SCOTLAND: The Big Picture / Common rhododendron (Rhododendron ponticum), an invasive species, growing amongst Gorse (Ulex sp.), Isle of Mull, Scotland, UK. June.

SCOTLAND: The Big Picture / Common rhododendron (Rhododendron ponticum), an invasive species, smothering temperate rainforest, Isle of Mull, Scotland, UK. June.

Konrad Wothe / Hairy alpine rose (Rhododendron hirsutum) flowering, Karwendel Mountains, Alps, Austria, Europe. July.

Oriol Alamany / A Nepalese family, flanked by their two Tibetan mastiff dogs, walks along path through the Rhododendron forests at an alttude of 3,000 metres on their way to the village of Ghorepani, during the monso...

Staffan Widstrand / Wild Wonders of China / Rhododendron bush, Lalashan Forest Reserve, Baling, Taiwan

Fabian Muhlberger / Wild Wonders of China / Rhododendron flowers, Alishan National Recreation Forest area, Taiwan.

Nick Upton / Wasp beetle (Clytus arietis) visiting a Rhododendron flower, Dorset heathland, UK, May.

Nick Upton / Blue-tailed damselfly (Ischnura elegans) sunning on a plant stem on heathland with flowering Rhododendron (Rhododendron ponticum) in the background, Dorset, UK, May.

Paul Harcourt Davies / Alpenrose (Rhododendron ferrugineum) on rock in Dolomites. Ciampac, Trentino, Italy. July.

Paul Harcourt Davies / Hairy alpenrose (Rhododendron hirsutum) at 2200m. Valparola Pass, near Cortina, Dolomites, Belluno, Italy. July.

Paul Harcourt Davies / Hairy alpenrose (Rhododendron hirsutum), at 2200m. Valparola Pass, near Cortina, Dolomites, Belluno, Italy. July.

Paul Harcourt Davies / Hairy alpenrose (Rhododendron hirsutum) at 2200m. Valparola Pass, near Cortina, Dolomites, Belluno, Italy. July.

Jack Dykinga / Old growth forest with flowering Rhododendron (Rhododendron macrophyllum) in front of trunks of Redwood trees (Sequoia sempervirens) with fog, Del Norte Coast Redwoods, California, USA.

Lynn M. Stone / Airedale Terrier lying down in garden amongst Rhododendron flowers. Connecticut, USA. June.

Lynn M. Stone / Airedale Terrier standing in garden beside Rhododendron flowers. Connecticut, USA. June.

Lynn M. Stone / Airedale Terrier in garden beside Rhododendron flowers, portrait. Connecticut, USA. June.

Wayne Wu Ying / Wild Wonders of China / Rhodoendron flowering on cliff above river, Tangjiahe Nature Reserve, Sichuan, China.

Nigel Cattlin / Dark red purple flowers of Rhododendron 'Tortoiseshell Orange' a medium evergreen garden shrub, Berkshire, England, UK, May

Nigel Cattlin / Dark red purple flowers of Rhododendron 'Hamilcar' a medium evergreen garden shrub, Berkshire, England, UK, May

Nigel Cattlin / Dark red purple flowers of Rhododendron 'Hamilcar' a medium evergreen garden shrub, Berkshire, England, UK, May

Ashish & Shanthi Chandola / White collared blackbird (Turdus albocinctus) perched in Rhododendron (Rhododendron sp) tree. North Sikkim, India. April.

Ashish & Shanthi Chandola / Rhododendron (Rhododendron sp) flowering. North Sikki, India. April.

Lynn M. Stone / English springer spaniel standing in Rhododendron flowers, Connecticut, USA. June.

Lynn M. Stone / Doberman pinscher with cropped ears sitting in Rhododendron flowers, Connecticut, USA. May.

Linda Pitkin / Common Dog-violet (Viola riviniana) Rhododendron Wood, Leith Hill, Surrey, England, April.

Olga Kamenskaya / Rhododendron flowers (Rhododendron dauricum) Lake Baikal, Siberia, Russia. June.

Sandra Bartocha / Common rhododendron (Rhododendron ponticum) lined path, Semper Park , Ruegen, Germany, March.

Sandra Bartocha / Common rhododendron (Rhododendron ponticum) lined path, Semper Park , Ruegen, Germany, March.

Sandra Bartocha / Common rhododendron (Rhododendron ponticum) lined path, Semper Park , Ruegen, Germany, March.

Linda Pitkin / Opposite-leaved golden-saxifrage (Chryosplenium oppositifolium) Rhododendron wood, Leith Hill, Surrey, England, April.

Jean E. Roche / Rhododendron (Rhododendron ferrugineum) flowering on hillside, Champsaur, Ecrins National Park, France, June 2018.