Echinocereus rigidissimus subsp. rubispinus
Common Name: Rainbow cactus
Origin: E. rigidissimus subsp. rubispinus originates from northern Sonora and northwestern Chihuahua, Mexico, in non-calcareous soils.
Description: The rainbow cactus is a solitary globular cactus with numerous (15-26) ribs, and spines that lay flat against the stems. The rubispinus subspecies is up to 50% smaller than the straight species, and possesses short purple-red spines and stigma lobes. In late spring, a ring of magenta flowers will develop at the head of the cactus, white throated and showy. Up to three months after blooming, flowers will be followed by spiny, green to brown fruits.
Cultivation and Care: