Light
Bright Indirect Light
Bright indirect light or morning sun is best; shield from intense midday summer sun.
Reference image Echinocereus scheeri
Scheer's Hedgehog Cactus
Overview
Echinocereus scheeri is a succulent subshrub in the family Cactaceae, characterized by its decumbent to semi-erect stems. Renowned for its magnificent, trumpet-shaped pink to orange-red flowers, this species is a favored ornamental among succulent collectors worldwide.
Taxonomy and Naming
The species was formally described in the mid-19th century. The genus name Echinocereus derives from the Greek "echinos" (hedgehog) and the Latin "cereus" (candle), referring to the spiny, columnar growth. The specific epithet "scheeri" honors the prominent 19th-century German botanist and plant collector Frederick Scheer 1.
Distribution and Habitat
Native to northwestern and central Mexico, its range spans states such as Sonora, Chihuahua, Durango, and Sinaloa 2. It thrives in desert and dry shrubland biomes, clinging to steep volcanic cliffs, rocky outcrops, and slopes under the partial shade of nurse plants.
Appearance
The stems are cylindrical, pale to bright green, reaching lengths of 10 to 70 cm with 7 to 10 distinct ribs. The areoles bear thin, needle-like spines varying from yellowish-white to brown. In late spring, it produces spectacular, elongated tubular flowers up to 12 cm long in shades of magenta, pink, or salmon 3.
Cultivation
In cultivation, it requires bright, filtered light or partial sun. While highly drought-tolerant, it benefits from regular watering during the active growth season of spring and summer, provided the substrate dries out completely between waterings.
Common Cultivation Mistakes
The most prevalent failure is root rot caused by poor soil drainage or overwatering. Keeping the plant too warm and wet during winter prevents the essential dormancy period, which can significantly inhibit spring flowering.
References
Watering
10-30 Days
Allow the potting mix to dry completely before watering. Suspend watering in winter.
Soil
Fast-draining mineral cactus mix with pumice and coarse sand
Use a mineral-rich cactus soil mixed with plenty of pumice, perlite, or gravel.
Safety
Pet Friendly
Non-toxic, but the sharp spines can cause physical injury to curious pets and children.
Difficulty
Easy
Very easy and resilient, provided it is not subjected to wet soil and freezing temps.
Native Habitat
Mexico
Native to the rocky cliffs, volcanic slopes, and semi-arid shrublands of northern and northwestern Mexico.
Frequently Asked Questions
Can Echinocereus scheeri be grown in a pot?
Yes, it grows excellently in pots provided you use a highly draining cactus mix and a container with drainage holes.
How often should I water it?
Water thoroughly in summer only when the soil is completely dry (about every 10 days). In winter, withhold water almost entirely.
What are the best light conditions?
It prefers 4-6 hours of bright filtered sunlight daily. A window facing morning sun is ideal.
Is it toxic to pets?
No, it is non-toxic, but its sharp spines pose a physical hazard to curious pets.
What kind of soil should I use?
Use a mineral-rich cactus mix amended with plenty of pumice, lava rock, or coarse sand for superior drainage.
How do I encourage it to bloom?
Provide a cool (5-10°C) and completely dry winter rest. This dormancy period triggers the formation of spring flower buds.
What is its growth rate?
It has a slow to moderate growth rate. Over time, its stems will elongate and start to trail or sprawl.
Is it cold hardy?
It can tolerate brief light frosts down to -5°C (23°F) if kept absolutely dry, but is best protected from freezing when potted.
What causes yellowish body lesions?
This is usually a sign of rot from overwatering or sunburn from sudden exposure to harsh direct afternoon sun.
How can it be propagated?
It propagates easily from stem cuttings in spring or summer. Let the cut dry for a few days to callouse before planting in dry soil.