John Shaw / Frost on soaptree yuccas (Yucca elata) and winter morning fog, in the gypsum sand dunes of White Sands National Park, New Mexico, USA. January.

Jack Dykinga / Soaptree yucca (Yucca elata) flowering at night, under starry sky. Cochise Stronghold, Dragoon Mountains, Coronado National Forest, Arizona, USA. June.

John Shaw / Soaptree yucca (Yucca elata) at sunset. White Sands National Park, New Mexico, USA. January.

Ingo Arndt / Soaptree Yucca (Yucca elata) flowering in gypsum sand, White Sands National Park, New Mexico, USA

Ingo Arndt / Soaptree Yucca (Yucca elata) flowering in gypsum sand, White Sands National Park, New Mexico, USA

Ingo Arndt / Soaptree Yucca (Yucca elata) in gypsum sand, White Sands National Park, New Mexico, USA

Sebastian Kennerknecht / Soaptree Yucca (Yucca elata) in desert, Blue Angels Peak, Sierra de Juarez, Colorado Desert, Sonoran Desert, California

Sebastian Kennerknecht / Soaptree Yucca (Yucca elata) in boulders in desert, Blue Angels Peak, Sierra de Juarez, Colorado Desert, Sonoran Desert, California

Tim Fitzharris / Soaptree Yucca (Yucca elata) and moon, White Sands National Park, New Mexico

Tim Fitzharris / Soaptree Yucca (Yucca elata) in sand dune, White Sands National Park, New Mexico

Jack Dykinga / White gypsum sand dunes studded with yuccas (Yucca elata) in morning light, White Sands National Park, New Mexico. January 2014.

Jouan Rius / Soaptree yucca (Yucca elata) flowering on gypsum dune, White Sands National Park, Chihuahuan Desert, New Mexico, USA, December 2012.