Echinocereus rigidissimus subsp. rubispinus (G.Frank & A.B.Lau) N.P.Taylor
Rainbow Hedgehog Cactus, Rainbow Cactus, Ruby Rainbow, Arizona Ruby Rainbow Hedgehog, Pink Comb Cactus
Echinocereus pectinatus var. rubispinus, Echinocereus pectinatus var. rubrispinus, Echinocereus rigidissimus var. rubispinus, Echinocereus rigidissimus var. rubrispinus
Echinocereus rigidissimus subsp. rubispinus is a small columnar cactus, up to 10 inches (25 cm) tall, with short pink spines. Stems are erect, cylindrical and up to 3 inches (7.5 cm) in diameter. Flowers are pinkish-red, magenta or red with white throats, up to 4 inches (10 cm) in diameter and appear in late spring.
USDA hardiness zones 9a to 11b: from 20 °F (−6.7 °C) to 50 °F (+10 °C).
How to Grow and Care
If you can successfully grow other globular cactus, you can most likely grow Echinocereus well. One of the key factors in success with these is avoiding any hint of wet soil. Because their root systems are weak, they are especially prone to root rot, which will eventually kill your plant. Otherwise, they thrive on a program of strong, bright light, slight water and a steady diet of light fertilizer. These cacti are vulnerable to mealybugs and aphids.
Echinocereus are slow-growing cacti that should only need repotting every other year or so. You can prolong the time to repotting by removing plantlets and potting them up in their own pots. When repotting a cactus, carefully remove it from its pot and knock away any clumped soil. These plants tend to be shallow-rooted with weak root systems, so take care not to damage their roots.
Learn more at How to Grow and Care for Echinocereus.
Echinocereus rigidissimus subsp. rubispinus is native to Mexico.
- Back to genus Echinocereus
- Succulentopedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
Subscribe now and be up to date with our latest news and updates.