Echinocereus rigidissimus, commonly known as the Arizona Rainbow Cactus or Rainbow Hedgehog Cactus is a solitary, growing cactus, that rarely branches or offsets with age. Echinocereus rigidissimus grows to a height of up to 30 cm, and a width of 11 cm when mature, with pectinate radial spines curved slightly towards the stem, the new spines are initially reddish to magenta and fades to a yellow or light pink colour when they mature. Echinocereus rigidissimus, flowers in flushes throughout the spring season, with multiple buds borne atop the plant from younger areoles, the flowers are bright pink in colour with a white coloured throat. If pollination is successful, Echinocereus rigidissimus forms circular shaped, greenish to dark purplish fruit, with white flesh and dark brown to black seeds approximately 3 months after flowering. Since it rarely offsets, Echinocereus rigidissimus is propagated by seed.
Rainbow Cactus Care
Echinocereus Rigidissimus



What is the plant
How to Care for the Plant
Water
Withhold water for up to six weeks while the roots recover from the transplanting process, then water the cactus thoroughly
Sunlight
Place the container in a warm, sunny spot.
Soil
Use commercial growing medium formulated specifically for cacti or make your own with equal parts coarse sand, perlite and peat moss.
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Container
Select a container as wide as half the height of the totem pole cactus. The container should be 3 to 4 inches deeper than the original nursery container.
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