Queen of the night (Selenicereus grandiflorus) care guide

Selenicereus grandiflorus is commonly called queen of the night. The name can also be applied to other night-blooming cacti, so the scientific name is the safest way to confirm the plant’s identity.

Give queen of the night bright filtered light or gentle sun, a very well-drained mix, moderate water during active growth, and much less water in winter. Protect it from frost and temperatures below about 40°F.

Yes, queen of the night is a climbing, epiphytic cactus in the family Cactaceae. Unlike many desert cacti, it benefits from organic matter and more moisture during its growing season.

Provide bright filtered light with some gentle direct sun, especially in spring. Strong, sudden afternoon sun can scorch stems that were grown indoors or in shade, so acclimate the plant gradually.

Yes, queen of the night can grow indoors near a bright window or under a strong grow light. It usually needs a support, enough space for trailing stems, and protection from cold drafts.

Queen of the night can grow outdoors year-round only in warm, frost-free parts of the United States, generally USDA Zones 10–11. In cooler areas, grow it in a container and bring it indoors before temperatures approach 40°F.

Protect queen of the night when temperatures fall to about 40°F or lower. It is frost tender, and freezing temperatures can severely injure or kill the stems.

A trellis, stake, hanging basket, or other support is useful because Selenicereus grandiflorus produces long, climbing or trailing stems. Support also helps display the plant and can reduce stem damage.

Yes, Selenicereus grandiflorus is primarily an epiphytic or lithophytic cactus in nature. Its roots need excellent drainage, but its growing medium should contain more organic material than a typical dry-desert cactus mix.

Water queen of the night thoroughly when the upper part of the mix has dried, then let excess water drain completely. Water more moderately during active growth and reduce watering substantially during the cooler winter rest.

Yellow, soft, or mushy stems commonly indicate excess moisture, poor drainage, or root or stem rot. Remove the plant from wet soil, cut away damaged tissue, and allow healthy cut surfaces to dry before re-rooting in a porous mix.

Shriveling can result from underwatering, damaged roots, cold stress, or prolonged exposure to unsuitable soil moisture. Check the roots and potting mix before watering, because adding water to rotting roots can worsen the problem.

Thin, weak, elongated growth usually indicates insufficient light, although young or naturally slender stems can also look narrow. Move the plant gradually to brighter light and provide support rather than making a sudden change.

Use a very well-drained cactus or epiphytic mix containing organic material and a substantial amount of coarse drainage material. The mix should hold some moisture during growth but never remain soggy around the roots.

Feed queen of the night lightly during active growth with a diluted, balanced or cactus fertilizer. Avoid heavy feeding and generally stop fertilizing during the cool, drier winter rest.

Repot queen of the night during active growth, preferably in spring, when the plant can recover quickly. Move it into only a slightly larger container with drainage holes, since an oversized pot stays wet longer.

Use fresh, porous mix in a container with drainage holes, handle the spiny stems carefully, and keep the plant at the same depth as before. After repotting, allow damaged roots or stems to dry and resume careful watering rather than keeping the mix constantly wet.

Yes, queen of the night grows well in a hanging basket if the container drains freely and the potting mix is porous. Make sure the basket can support the plant’s expanding stems and provide bright light.

Take a healthy stem cutting, let the cut end callus for several days, and place it in a barely moist, very well-drained mix. Keep it warm and bright but out of harsh sun until roots form, then water more normally.

Yes, Selenicereus grandiflorus can be grown from seed, but seedlings develop more slowly than plants from stem cuttings. Use a sterile, well-drained medium, provide warmth and bright indirect light, and keep the medium lightly moist during germination.

The best time to take queen of the night cuttings is during the warm active-growing season. Cuttings usually root more reliably when they can receive warmth, bright light, and adequate—but not excessive—moisture.

Yes, prune queen of the night to control length, remove damaged growth, or shape the plant around a support. Use clean tools, wear gloves, and allow fresh cuts to dry before exposing them to heavy moisture.

Species-specific toxicity information for Selenicereus grandiflorus is limited, so it should not be treated as confirmed pet-safe. Keep it away from pets and children because the spines and plant sap may cause physical injury or irritation.

Yes, queen of the night has spines or spine-bearing structures along its stems. Handle it with gloves and keep trailing or climbing growth away from walkways and areas used by children or pets.

The spines can puncture or scratch skin, and plant sap may cause irritation in sensitive people. Wear gloves when pruning or repotting, and wash exposed skin after handling the plant.

Queen of the night produces large, fragrant flowers that open after dusk and are typically enjoyed during the night. Exact flowering time varies with the plant, climate, light, maturity, and growing conditions.

A queen of the night flower generally opens for one night and fades by the following day. Flowering is brief, so inspect developing buds in the evening and provide support for the heavy blooms.

Failure to flower is commonly related to insufficient light, a plant that is too young, excessive winter watering, or inadequate seasonal rest. Provide brighter acclimated light, keep winter conditions cooler and drier, and avoid heavy pruning before the budding season.

Queen of the night may need several years of growth before it flowers, especially when grown from seed. Mature, well-established plants with strong light and suitable seasonal care are more likely to bloom.

A cooler, drier winter rest can help queen of the night prepare for flowering. Keep it protected from temperatures below about 40°F, reduce watering, and avoid stimulating soft growth with frequent fertilizer.

Encourage flowering with bright light, healthy active-season growth, restrained winter watering, and a suitable support system. Avoid sudden environmental changes or heavy root disturbance when flower buds are developing.