Selenicereus grandiflorus
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Selenicereus grandiflorus

Night-blooming cereus · Queen-of-the-night · Queen of the night · Organillo · Pitayita-nocturna reina de la noche

Tier 2 Difficulty: easy Water: low Light: full_sun Toxicity: low
Temperature
20–37 °C
Soil pH
6–7
Hardiness
Zone 10–11
Click count
408
Observations
266

Description

Source: leafsnap

Selenicereus grandiflorus is a cactus species originating from the Antilles, Mexico and Central America. The species is commonly referred to as queen of the night, night-blooming cereus (though these two terms are also used for other species), large-flowered cactus, sweet-scented cactus or vanilla cactus. The true species is extremely rare in cultivation. Most of the plants under this name belong to other species or hybrids. It is often confused with the genus Epiphyllum.

Care Guide

💧 Water

The Queen of the Night is drought-tolerant and only needs thorough watering when the soil is completely dry. It's important to avoid any water accumulation. During the growing season, water the plant once or twice a week, and reduce watering in the winter. Use rainwater or distilled water to prevent soil compaction, which can be caused by tap water.

☀️ Light Full sun

Originating in arid areas, Queen of the Night prospers in full sun, its native habitat marked by strong sunlight and very little shade. It can also tolerate partial sun, providing some adaptability in its growth.

Ideal: Full sun
🌡️ Temperature 20–37.8°C

Queen of the night prefers warm conditions and needs higher temperatures during the growing season to support growth and metabolic processes. It does best with plenty of sunlight, suitable moisture levels, and good air circulation. However, it is vulnerable to harm from very low temperatures and from excessive watering. It is important to maintain a balance and to avoid both excessively high heat and overly dry conditions.

Ideal temperature: 20–37.8°C
💨 Humidity dry (<40%)

This plant prefers dry conditions, so don't mist it. However, watering it less often can also thrive in higher humidity.

Humidity: dry (<40%)
🪴 Soil 6-7
Soil pH: 6-7
🌱 Fertilizer

For Queen of the night, light applications of fertilizer once or twice a year during the growing season are sufficient. Avoid fertilizing in winter and summer when it is dormant. Reduce fertilizer for repotted plants and delay fertilizing for a couple of months after repotting. Applying fertilizer supports healthy growth and encourages blooms.

🪴 Pot & Repot 2-3 years

Repot the Queen of the Night in spring or summer, choosing a pot just slightly larger than the current one that has good drainage. Use a sandy or gritty cactus mix that drains well. Handle the plant carefully to avoid its spines. Let the cactus dry out before repotting to help prevent root rot. After repotting, wait about a week before watering so the roots can heal.

Suggested frequency: 2-3 years
✂️ Pruning

The "Queen of the Night" plant is known for its large, fragrant blooms. To keep it healthy and thriving, it requires careful pruning from early to late winter. When pruning, focus on removing dead stems and thinning out overly crowded areas to improve air circulation. Be careful not to prune too heavily, as this can hinder blooming. Regular, gentle pruning encourages healthier growth and more abundant flowering. Additionally, handle the plant with care, as it has spiny stems.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Shrub
Life Cycle
Perennial
Genus
Selenicereus
Family
Cactaceae
Hardiness Zone
10-11
Mature Height
20 cm
Mature Spread
15 cm
Leaf Color
Green
Leaf Type
Evergreen
Flower Color
White
Flower Size
15.24 cm to 30.48 cm
Bloom Time
Summer, Early fall
Planting Time
Spring
Harvest Time
Late summer, Fall
Native Area
Tropical South America

Tags (25)

Common Names (8)

en Night-blooming cereus
en Queen-of-the-night
en Queen of the night
en Organillo
en Pitayita-nocturna reina de la noche
en Pitayita-nocturna reina de la noche (es)
en Maidenhair fern
en Nightblooming cereus