Queen of the Night (Selenicereus grandiflorus)
Grandiflorus
About this plant
Selenicereus grandiflorus, commonly known as Queen of the Night, is a night-blooming cactus famous for its large, fragrant white flowers that open after sunset and last only one night. It is a climbing or sprawling cactus with long, ribbed stems and is often grown as an ornamental plant for its spectacular flowers.
Taxonomy
Higher classification: Order: Caryophyllales
Origin & Distribution
- Native region
- Central America, Caribbean
- Distribution
- Native to Central America and the Caribbean; cultivated in warm regions worldwide.
Care
- Suitable locations
- Indoor, Outdoor, Balcony, Greenhouse
- Preferred window facing
- East-facing, South-facing, West-facing
- USDA hardiness zones
- 10-12
- Soil pH
- 6.0-7.5 (slightly acidic to neutral)
- Soil type
- well-draining cactus or succulent mix
Watering. Water thoroughly when the top inch of soil is dry. Reduce watering in winter to prevent root rot.
Fertilizing. Feed with a balanced, diluted cactus fertilizer every 4-6 weeks during the growing season (spring and summer). Avoid fertilizing in winter when the plant is dormant.
Selenicereus grandiflorus is a climbing cactus that prefers bright light and well-draining soil. It is moderately easy to care for but needs careful watering to avoid root rot. Regular pruning helps manage its growth and encourages flowering.
Propagation
- Propagation methods
- Cuttings, Seeds
Ornamental features
- Flowering
- Yes
- Flowering period
- summer
Large, fragrant white night-blooming flowers; long, ribbed green stems with spines.
Toxicity & Safety
Generally non-toxic but avoid ingestion and contact with sap to prevent mild irritation.
Allergy information
Selenicereus grandiflorus may cause mild skin irritation in sensitive individuals due to its sap. It does not produce airborne pollen that typically triggers allergies. To reduce exposure, avoid direct contact with the plant's sap and wear gloves when handling.
Common problems
Overwatering can cause root rot, and insufficient light may prevent flowering. Pests like mealybugs can occasionally appear.
Uses
Primarily grown as an ornamental plant for its spectacular night-blooming flowers.
Notes
Prune after flowering to control size and shape. Repot every 2-3 years in spring. Protect from frost and cold drafts.