PlantFun
Plant Needs
Sunlight
Full direct sunlight for optimal growth; tolerate partial shade in extreme midday heat
Watering
Water deeply only when the entire soil volume is completely dry; avoid standing water to prevent root rot
Temperature
Tolerates brief light frosts down to 5°C; optimal growth occurs at 18–30°C
Characteristics
- Stem: Upright ribbed columnar stem with golden areoles and short, sharp spines
- Flower: Large, fragrant white nocturnal blooms that open overnight and wilt by midday
- Spines: Short golden radial spines and longer central spines for protection against herbivores
Care Guide
Watering
Water deeply once every 2–3 weeks when soil is fully dry
Fertilization
Diluted cactus fertilizer once monthly. Use low-nitrogen fertilizer to promote healthy stem growth without excessive foliage
Eggshell powder topdress：Crush fully dried eggshells into fine powder; sprinkle lightly on soil surface; avoid direct contact with stems to prevent rotPruning
- Remove dead or damaged stem segments to maintain a tidy, upright form
- Trim offset pups at the base for propagation if desired
- Avoid pruning the main central stem unless necessary to control height
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Mild toxicity; ingestion may cause vomiting, diarrhea, or oral irritation from spines
Humans: Mild skin irritation from spines or sap; minor gastrointestinal upset if ingested
Garden Uses & Culture
Culture: N/A
Usage: Ornamental landscape accent; container-grown indoor succulent
