Erinacea

Description

Erinacea, also known as the hedgehog cactus, is a genus of cactus that is native to North America. There are approximately 16 species of Erinacea, all of which are characterized by their small size and distinctive spines. These cacti are popular among collectors due to their unique appearance and easy care requirements. Erinacea typically blooms in the spring or summer, producing vibrant flowers in shades of pink, red, and yellow.

Taxonomic Information

Appearance

Erinacea cacti are small and globular in shape, typically growing to a maximum height of 6 inches. They are covered in spines that can range in color from white to black, and their flowers are typically pink, red, or yellow. These cacti are slow-growing and may take several years to reach their full size.

Care Guide

Erinacea cacti are easy to care for and can thrive in a range of conditions. They prefer well-draining soil and should be watered sparingly, allowing the soil to dry out completely between waterings. Fertilization is not necessary, but a light application of cactus fertilizer in the spring can encourage growth and flowering. Erinacea cacti should be placed in a sunny location and can tolerate temperatures as low as 20 degrees Fahrenheit. They are hardy in zones 9-11.

Common Pests & Diseases

Erinacea cacti are relatively pest and disease resistant but may be susceptible to mealybugs and spider mites. These pests can be treated with an insecticidal soap or neem oil. Overwatering can lead to root rot, which can be prevented by allowing the soil to dry out between waterings.

Habitat

Erinacea cacti are native to North America and can be found in a range of habitats, from deserts to grasslands. They are typically found growing in rocky or sandy soil and can tolerate drought and temperature extremes.

Question and Answer

Q: Can Erinacea cacti be grown indoors?

A: Yes, Erinacea cacti can be grown indoors as long as they are placed in a sunny location and the soil is well-draining.

Q: How often should Erinacea cacti be watered?

A: Erinacea cacti should be watered sparingly, allowing the soil to dry out completely between waterings.

Q: What is the hardiness zone for Erinacea cacti?

A: Erinacea cacti are hardy in zones 9-11.

Q: How often should Erinacea cacti be fertilized?

A: Fertilization is not necessary, but a light application of cactus fertilizer in the spring can encourage growth and flowering.

Related Plants

• Mammillaria
• Gymnocalycium
• Opuntia
• Ferocactus

References

• “Erinacea.” World of Succulents, https://worldofsucculents.com/erinacea-hedgehog-cactus/. Accessed 18 May 2021.
• “Erinacea.” Dave’s Garden, https://davesgarden.com/guides/pf/b/Erinacea/. Accessed 18 May 2021.
• “Hedgehog Cactus (Erinacea).” Plant Care Today, https://plantcaretoday.com/erinacea-hedgehog-cactus.html. Accessed 18 May 2021.