🌵 Rainbow Hedgehog Cactus (Echinocereus rigidissimus var. rubrispinus)

The Rainbow Hedgehog Cactus, also known by its scientific name Echinocereus rigidissimus var. rubrispinus, is a striking and colorful cactus variety beloved by plant enthusiasts for its bold aesthetic and easy care. Native to the desert regions of the southwestern United States and northern Mexico, this cactus thrives in sunny, dry environments and adds a pop of color to any garden or indoor plant collection.

✨ Appearance

This solitary-growing cactus has a cylindrical, upright stem that can reach up to 30 cm (12 inches) tall and around 7 cm (3 inches) in diameter. What makes it truly special is its vibrant spines — ranging from soft pink to deep magenta — arranged in neat horizontal bands that give the cactus a rainbow-like look. The body is typically hidden beneath these dense spines, giving it a soft, fuzzy appearance.

🌸 Flowers

In late spring to early summer, the Rainbow Hedgehog Cactus produces large, showy flowers that bloom near the top of the stem. The blossoms are usually a brilliant magenta or deep pink, with lighter centers and yellow stamens, adding even more vibrancy to this already colorful plant. Each bloom can be up to 10 cm (4 inches) wide.

🌞 Light & Temperature

• Light: Prefers full sun to partial shade. For best color and flowering, provide plenty of bright, direct light.

• Temperature: Heat-tolerant and cold-hardy down to around -10°C (14°F) if kept dry. Protect from frost in colder climates.

🪴 Care Requirements

• Watering: Like most cacti, it requires minimal watering. Allow the soil to dry completely between waterings. Overwatering can lead to root rot.

• Soil: Needs well-draining cactus or succulent soil mix. Add sand or perlite to improve drainage.

• Fertilizer: During the growing season (spring and summer), feed monthly with a diluted cactus fertilizer. No feeding needed in winter.

• Potting: Grows well in containers. Choose pots with drainage holes.

🌱 Growth Habit

This cactus grows slowly and usually stays solitary, unlike other Echinocereus species that tend to form clumps. Its compact size makes it ideal for small spaces, windowsills, or decorative planters.

💡 Fun Fact

Despite its name, this cactus isn't prickly like a hedgehog — the spines are more soft and fine than sharp, making it a friendlier option for cactus beginners or households with pets.