PlantFun
Plant Needs
Sunlight
Requires full direct sunlight for optimal growth; tolerate partial shade during peak summer heat to prevent sunscald
Watering
Water deeply only when the entire soil medium is completely dry; avoid overwatering to prevent root rot
Temperature
Thrives in warm arid conditions; protect from frost below 5°C to prevent stem damage
Characteristics
- Stem: Columnar, ribbed green stems with areoles bearing 8–12 sharp yellowish radial spines
- Flower: Large 15–20 cm funnel-shaped white blooms, highly fragrant, opening overnight
- Fruit: Small fleshy red berries, rarely produced in indoor cultivation
Care Guide
Watering
Water deeply once every 2–3 weeks when soil is fully dry
Fertilization
Diluted cactus fertilizer once monthly. Use a low-nitrogen, high-potassium fertilizer to support flowering and stem health
Eggshell powder topdressing：Crush clean, fully dried eggshells into fine powder; sprinkle lightly on the soil surface once every 3 months to boost calcium content without burning rootsPruning
- Remove dead or damaged stem segments with sterilized shears to maintain plant health
- Trim offset pups at the base for propagation if overcrowding occurs
- Avoid pruning the main columnar stem unless severely damaged, as it does not regrow easily
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic; only potential physical irritation from spines
Humans: Physical irritation from sharp spines; flesh and flowers are non-toxic if ingested
Garden Uses & Culture
Culture: N/A
Usage: Ornamental cactus for xeriscaping, container gardening, and indoor sunny displays
