Echinocereus scheeri (Salm-Dyck) Scheer
Cereus salm-dyckianus, Cereus scheeri, Echinocereus rischeri, Echinocereus salmianus
Echinocereus scheeri is a cactus with cylindrical green stems with 6 to 10 ribs lined with clusters of white spines with brown or blackish tips. The stems are prostrate or ascending, up to 28 inches (70 cm) long, and up to 1.6 inches (4 cm) in diameter.
The flowers are red, purple, scarlet, pink, or salmon-orange and appear in spring on the sides of the stems from sharply pointed buds and can last for a week or more, remaining open at night and closing somewhat during the hottest part of the day. They are trumpet-shaped, up to 5 inches (12.5 cm) long, and up to 3 inches (7.5 cm) in diameter. Fruits are oval, up to 0.8 inches (2 cm) long, and bright green with white pulp and black seeds.
USDA hardiness zones 9b to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C).
How to Grow and Care
If you can successfully grow other globular cacti, 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, eventually killing your plant. Otherwise, they thrive on a program of intense light, little 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, remove it from its pot and remove 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 scheeri is native to Mexico.
Subspecies, Varieties, and Cultivars
- Back to genus Echinocereus
- Succupedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
Click on a photo to see a larger version.