Saguaro cactus flowers, Coronado National Forest, Arizona, USA

© Jack Dykinga/Minden Pictures - 2020-03-02

cactus terrestrial plant san pedro cactus flower vegetation plant thorns, spines, and prickles saguaro botany large-flowered cactus biome adaptation acanthocereus tetragonus peniocereus organism hedgehog cactus caryophyllales plant stem houseplant prickly pear succulent plant botanical garden