Echinopsis cactus (Echinopsis calochlora)
calochlora
About this plant
Echinopsis calochlora is a type of cactus known for its round, ribbed green body and beautiful, large white flowers that bloom at night. It is popular among cactus enthusiasts for its attractive shape and relatively easy care. This plant stores water in its thick stems, allowing it to survive dry conditions.
Taxonomy
Higher classification: Order Caryophyllales
Origin & Distribution
- Native region
- Argentina
- Distribution
- Native to Argentina, commonly cultivated worldwide as an ornamental cactus.
Care
- Suitable locations
- Indoor, Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, West-facing, East-facing
- USDA hardiness zones
- 9–11
- Soil pH
- 6.0–7.5 (slightly acidic to neutral)
- Soil type
- well-draining cactus or succulent mix
Watering. Water sparingly, allowing the soil to dry completely between waterings. Reduce watering significantly during winter dormancy to prevent root rot.
Fertilizing. Feed with a balanced, diluted cactus fertilizer during the growing season (spring and summer) once a month. Avoid fertilizing in winter when the plant is dormant.
Echinopsis calochlora is a hardy cactus that thrives with minimal care. It prefers bright sunlight and well-draining soil. Overwatering can cause root rot, so water sparingly, allowing the soil to dry out between waterings. It requires little maintenance and is suitable for beginners.
Propagation
- Propagation methods
- Seeds, Cuttings
Ornamental features
- Flowering
- Yes
- Flowering period
- spring–summer
Attractive ribbed green stems with large, fragrant white flowers that open at night.
Toxicity & Safety
Non-toxic to humans and pets, safe to keep around children and animals. However, spines can cause physical injury if handled carelessly.
Allergy information
Echinopsis calochlora is generally safe and unlikely to cause allergies. However, some people sensitive to cactus spines might experience mild skin irritation if touched. To avoid this, handle the plant carefully and wear gloves when repotting or pruning.
Common problems
Overwatering can lead to root rot and fungal diseases. Insufficient light may cause the plant to become elongated and weak. Pests like mealybugs or spider mites can occasionally appear but are generally easy to control.
Uses
Primarily grown as an ornamental plant for its attractive shape and beautiful flowers. Suitable for indoor decoration and outdoor rock gardens in warm climates.
Notes
Prune dead or damaged parts carefully to avoid injury from spines. Repot every 2–3 years in fresh cactus soil to maintain health. Protect from frost and prolonged cold temperatures.