Echinocereus reichenbachii is a solitary or slowly branching cylindrical shaped cactus with up to 12 branches. It is one of the smaller Echinocereus species. Cacti occur in all shapes and sizes. They are extremely well adapted to drought and able to store water within the structure to ensure survival through dry periods. They can be found surviving in the driest places on the planet. Almost all cacti are succulents, and are often grown in greenhouses, particularly in regions unsuited to their cultivation outdoors. They can be grown in the ground or in suitable containers which means that they are suitable as houseplants, being tolerant of the often dry atmosphere. Potted cacti can be moved outside in the warm summer months.