Jack Dykinga / Ironwood Forest National Monument, Arizona. Sunset light with whispy clouds over Ragged Top Mountain in the Silverbell range.

Jeff Foott / Mexican giant cardon cactus (Pachycereus pringlei) and Boojum tree (Fouquieria columnaris) in Sonoran Desert, rainbow in background. Catavina, Valle de los Cirios Reserve, Baja California, Mexico.

Claudio Contreras / Catalina Desert Iguana (Dipsosaurus catalinensis), Catalina (Santa Catalina) Island, Loreto Bay National Park, Gulf of California (Sea of Cortez), Baja California, Mexico, May, Second place in Visions...

Claudio Contreras / Prickly pear (Opuntia sp.) growing on coastline, Socorro Island, Revillagigedo Archipelago National Park (Socorro Islands), Pacific Ocean, Western Mexico, November, Honorary Mention in the third natio...

Mark MacEwen / Octopus tree (Didiera madagascariensis), Spiny Forest, Berenty, Madagascar

Jack Dykinga / ARCHIVED SG - Duplicate 10/10/2017. Saguaro cactus (Carnegiea gigantea) at sunset, with drooping frost damaged limbs, South Maricopa Mountains Wilderness, Sonoran Desert National Monument, Arizona...

Jack Dykinga / Notch-leaf scorpion-weed (Phacelia crenulata) blooming around Desert agave (Agave desertii) in Glorieta Canyon, Anza-Borrego State Park, California, USA, March 2017. These plants are flowering during...

Jack Dykinga / Notch-leaf scorpion-weed (Phacelia crenulata) blooming around Desert agave (Agave desertii) in Glorieta Canyon, Anza-Borrego State Park, California, USA, March 2017. These plants are flowering during...

Floris van Breugel / Barrel cacti (Ferocactus pilosus) and Ocotillo overlook Palm oasis at sunrise, Anza-Borrego Desert State Park, California, USA March

Floris van Breugel / Ocotillo (Fouquieria splendens) in morning sun, Anza-Borrego State Park, California, USA February

Cyril Ruoso / Verreaux's sifakas (Propithecus verreauxi) in Madagascar ocotillo (Alluaudia procera) trees Berenty, Madagascar.

Cyril Ruoso / Queen of the Andes (Puya raymondii) Cordillera Blanca Massif, Andes, Peru, November.

Cyril Ruoso / Giant humming bird (Patagona gigas) feeding from Queen of the Andes (Puya raymondii) flowers, Cordillera Blanca Massif, Andes, Peru, November.

Jack Dykinga / Lightning storm with rainbow over Saguaro cactus (Carnegiea gigantea) Avra Valley, Saguaro National Park, Tucson Mountains, Arizona, USA, August 2015. Long exposure with lightning trigger.

Enrique Lopez-Tapia / Giant lobelia (Lobelia rhynchopetalum) flower spikes in mist, Sanetti Plateau, Bale Mountains National Park. Ethiopia, November 2014

Jack Dykinga / Saguaro cactus (Carnegiea gigantea) in flower at night, with The Milky Way behind, Sonoran Desert National Monument, Sierra Estrella Mountain Wilderness, Arizona, USA, May.

Jack Dykinga / Saguaro cactus (Carnegiea gigantea) in flower at night, with The Milky Way behind, Sonoran Desert National Monument, Sierra Estrella Mountain Wilderness, Arizona, USA, May.

Jack Dykinga / Great horned owl (Bubo virginianus) chicks nesting in saguaro cactus (Carnegiea gigantea), near Oracle, Sonoran Desert, Arizona, USA, May.

Jack Dykinga / Great horned owl (Bubo virginianus) chick nesting in Saguaro cactus (Carnegiea gigantea), Santa Catalina Mountains, Arizona, USA, May.

Jack Dykinga / Low angle view of Saguaro cactus (Carnegiea gigantea) with twisted lowered arms drooping to the ground, a result of frost damage. Honey Bee Canyon, Oro Valley, Arizona, USA. February.

Jack Dykinga / Agave (Agave montana) in mountain habitat in the Sierra Madre Oriental range, Nolina (Nolina sp), Madrone and Pine (Pinus sp) also present, Tamaulipas, Mexico

Jack Dykinga / Looking down into the leaves of an Agave plant {Agave utahensis} with Pinyon pine cone {Pinus edulis}, Grand Canyon-Parashant National Monument, Arizona, USA

Marie Lochman / Dunna dunna (Lawrencia helmsii) succulent shrub growing in arid ground, Western Australia.

Chris Mattison / Living stone (Lithops lesliei) in cultivation with bud appearing, South Africa.

Konrad Wothe / Cobweb houseleek (Sempervivum arachnoideum) in flower, Grisons, Switzerland, Europe. July.

Ugo Mellone / Suaeda sp. beside a salty desert pond, Reg Labyad, Southern Morocco, Africa.

Ugo Mellone / Euphorbia officinarum growing from rocks in the Sahara desert, Djebel Ouarkziz, Southern Morocco, Africa.

Chris Mattison / Cobweb houseleek (Sempervivum arachnoideum) growing on rocks, Valgrisenche, Italian Alps, Italy.

Chris Mattison / Mountain houseleek (Sempervivum montanum) growing out of lichen covered rocks. Valgrisenche, Italian Alps, Italy.

Chris Mattison / Mountain houseleek, (Sempervivum montanum), Gran Paradiso National Park, Italian Alps, Italy.

Edwin Giesbers / Money tree / Jade plant (Crassula ovata) Tenerife, Canary Islands, Europe.

Edwin Giesbers / Succulent (Aeonium pseudourbicum) and Narrow leaved cistus (Cistus monspeliensis) Tenerife, Canary Islands, Europe.

Edwin Giesbers / Succulent (Aeonium pseudourbicum) endemic to Tenerife, Canary Islands

Edwin Giesbers / African blue tit (Cyanistes teneriffae) Tenerife, Canary Islands

Edwin Giesbers / African blue tit (Cyanistes teneriffae) Tenerife, Canary Islands

Edwin Giesbers / Succulent (Aeonium pseudourbicum) close up covered in dew, Tenerife, Canary Islands, Europe.

Edwin Giesbers / Spiny pest pear (Opuntia dillenii) in fruit and Hercules club / Canary Island Spurge (Euphorbia canariensis) in montane habitat, with flat tooped mountain ridge in background, Parque Rural de Teno, Te...

Edwin Giesbers / Slenderleaf iceplant (Mesembryanthemum nodiflorum) growing in lava stones, Parque Rural de Teno, Tenerife, Canary Islands

Edwin Giesbers / Slenderleaf iceplant (Mesembryanthemum nodiflorum) Parque Rural de Teno, Tenerife, Canary Islands

Edwin Giesbers / Pinwheel / Haworths aeonium (Aeonium haworthii) Tenerife, Canary Islands

John Cancalosi / Gila woodpecker (Melanerpes uropygialis) feeding on Saguaro (Carnegiea gigantea) blossom nectar and the insects trapped in them, Sonoran Desert, Arizona, USA.

John Cancalosi / Curve-billed thrasher (Toxostoma curvirostre) feeding on Saguaro cactus (Carnegiea gigantea) blossom nectar and the insects trapped in it, Sonoran Desert , Arizona, USA.

John Cancalosi / Curve-billed thrasher (Toxostoma curvirostre) feeding on Saguaro cactus(Carnegiea gigantea) blossom nectar and the insects trapped in it, Sonoran Desert, Arizona, USA.

John Cancalosi / Gilded flicker (Colaptes chrysoides) feeding on Saguaro cactus (Carnegiea gigantea) blossom nectar, Sonoran Desert, Arizona, USA.

John Cancalosi / Curve-billed thrasher (Toxostoma curvirostre) feeding on nectar in Saguaro cactus (Carnegiea gigantea) blossom and the insects trapped in them, Sonoran Desert, Arizona, USA.

John Cancalosi / Gila woodpecker (Melanerpes uropygialis) pair feeding on Saguaro cactus (Carnegiea gigantea) blossom nectar, one chasing the other off the blossoms, Sonoran Desert, Arizona, USA.

John Cancalosi / Gilded flicker (Colaptes chrysoides) feeding on Saguaro cactus (Carnegiea gigantea) blossom nectar and exotic House sparrow (Passer domesticus) by nest; the most widely distributed wild bird on the pl...

John Cancalosi / Curve-billed thrasher (Toxostoma curvirostre) on Saguaro cactus (Carnegiea gigantea) calling from perch on top of flowers, Sonoran Desert, Arizona, USA.