Saguaro cactus blooming. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1239.html Claret Cup Cactus with flowers. Joshua Tree National Park, California, USA. http://www.terragalleria.com/parks/np-image.jotr1111.html Cactus in bloom and Ocatillo,. Anza Borrego Desert State Park, California, USA http://www.terragalleria.com/california/picture.usca9726.html Pickly pear cactus flower. Big Bend National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.bibe1409.html Close-up of Ocatillo bloom. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33439.html Saguaro cactus flowers against blue sky. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1240.html Claret Cup Cactus, rock slabs, and Joshua trees, sunset. Joshua Tree National Park, California, USA. http://www.terragalleria.com/parks/np-image.jotr1109.html Beavertail cactus in bloom. Big Bend National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.bibe2208.html Cactus in cresote brush in bloom. Anza Borrego Desert State Park, California, USA http://www.terragalleria.com/california/picture.usca9727.html Saguaro cactus with blooms. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1235.html Claret Cup Cactus with flowers. Joshua Tree National Park, California, USA. http://www.terragalleria.com/parks/np-image.jotr1110.html Yellow prickly pear cactus in bloom and Chisos Mountains. Big Bend National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.bibe20792.html Cactus in bloom and Ocatillo,. Anza Borrego Desert State Park, California, USA http://www.terragalleria.com/california/picture.usca9725.html Saguaro flower on top of cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1236.html Cactus with yellow blooms and Chisos Mountains. Big Bend National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.bibe20791.html Variety of desert plants. Joshua Tree National Park, California, USA. http://www.terragalleria.com/parks/np-image.jotr20984.html Arms of blooming Saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1241.html Cactus with multi-colored blooms and Chisos Mountains. Big Bend National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.bibe1401.html Claret Cup Cactus, rock slabs, and Joshua trees, sunset. Joshua Tree National Park, California, USA. http://www.terragalleria.com/parks/np-image.jotr20974.html Saguarao arms topped by creamy white flowers. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45091.html Prickly pear cactus with yellow blooms and Chisos Mountains. Big Bend National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.bibe1400.html Engelmann Hedgehog cactus in bloom. Joshua Tree National Park, California, USA. http://www.terragalleria.com/parks/np-image.jotr1141.html Arms of Saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1234.html Colorful prickly pear cactus in bloom and Chisos Mountains. Big Bend National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.bibe20793.html Beavertail Cactus in bloom. Joshua Tree National Park, California, USA. http://www.terragalleria.com/parks/np-image.jotr21305.html Saguaro cactus flower and bees. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1242.html Barrel and beavertail cacti in Rattlesnake Canyon. Joshua Tree National Park, California, USA. http://www.terragalleria.com/parks/np-image.jotr1133.html Engelmann Hedgehog cactus in bloom. Big Bend National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.bibe1407.html Saguaro cactus in bloom. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu2192.html Beavertail Cactus in bloom. Joshua Tree National Park, California, USA. http://www.terragalleria.com/parks/np-image.jotr1106.html Saguaro cactus blooms. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1237.html Beaver tail cactus with bright pink blooms. Joshua Tree National Park, California, USA. http://www.terragalleria.com/parks/np-image.jotr20985.html Four-armed saguaro in bloom. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45094.html Desert landscape framed by saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45098.html Sonoran cactus in bloom. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45083.html Mature saguaro in bloom. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45087.html Giant saguaro with blooms on tip of arms. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45096.html Palo Verde and saguaro with flowers. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45100.html Tops of saguaro cactus with blooms. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45099.html Giant saguaro cactus with flowers on curving arm. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45097.html Woodpecker perched on top of saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45101.html Saguaro forest on mountain slopes. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45093.html Detail of saguaro arm with flowers. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45090.html Saguaro cactus with night blooming flowers. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45086.html Saguaro with twisted arm and flowers. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45095.html Saguaros (Carnegiea gigantea) in flower. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45085.html Tip of saguaro arm with pods and blooms. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45089.html Sonoran desert vegetation in spring. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45082.html Desert slope with blooming saguaros. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu45088.html Saguaro cactus flowers and arm. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1238.html