Werckle's Moon Cereus (Selenicereus wercklei)

Werckle's Moon Cereus

Selenicereus wercklei

Night blooms unfurl like fragrant silk under moonlight. Epiphytic climbing cactus; common name: Werckle's Moon Cereus.

Partial sun
1/week
Moderate
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Plant Needs

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Sunlight Bright indirect light with gentle morning sun; avoid midday direct sun to prevent stem scorching
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Watering Allow the top 2–3 cm of soil to dry completely between waterings to prevent root rot
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Temperature Thrives in warm, humid conditions; protect from temperatures below 12°C to avoid stem damage
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Characteristics

  • Leaf: Modified into small, sharp spines on stem nodes; no true foliage leaves
  • Flower: Large, creamy-white, intensely fragrant blooms up to 30 cm in diameter
  • Stem: Flat, segmented green stems with aerial roots for climbing anchorage
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Care Guide

Watering

Keep substrate evenly moist but not waterlogged; mist stems to boost ambient humidity

Fertilization

Diluted balanced liquid fertilizer every 4 weeks. Cease fertilization during autumn and winter dormancy to avoid nutrient buildup

Banana peel compost tea:Compost banana peels for 2 weeks, steep in water for 48 hours, dilute 1:20 for root drench; avoid raw peels to prevent pest infestations
Pruning
  • Trim dead or discolored stem segments at nodes to encourage new growth
  • Tie climbing stems to a support structure to maintain desired trailing or climbing shape
  • Remove excess aerial roots to reduce clutter without harming the plant
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported toxic reactions

Humans: Non-toxic to humans; no known adverse health effects

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Garden Uses & Culture

Culture: Night blooms symbolize fleeting beauty and quiet elegance in ornamental horticulture

Usage: Ornamental indoor plant; prized for its rare, fragrant nocturnal flowers