PlantFun
Plant Needs
Sunlight
Requires full direct sunlight for 6–8 hours daily; tolerates partial shade during extreme midday heat
Watering
Water deeply once weekly in growing season; allow soil to fully dry between waterings to prevent root rot
Temperature
Thrives in 20–30°C; tolerates brief dips to 10°C but will suffer damage from frost
Characteristics
- Leaf: Modified into sharp, yellowish spines arranged in areoles along stems
- Flower: Large, white, fragrant nocturnal blooms that wilt by mid-morning
- Stem: Thick, ribbed, blue-green columnar stems with waxy coating to reduce water loss
Care Guide
Watering
Water deeply when top 10–15 cm of soil is completely dry
Fertilization
Diluted cactus fertilizer once monthly. Discontinue fertilization during winter dormancy to prevent stress
Eggshell powder topdress：Grind dried, rinsed eggshells into fine powder; sprinkle lightly on soil surface to slowly release calcium without burning rootsPruning
- Remove dead or damaged stem segments to maintain plant shape and reduce disease risk
- Trim overcrowded branches to improve airflow and light penetration
- Avoid pruning during winter dormancy to prevent slow healing and stress
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats; spines may cause physical irritation if ingested or touched
Humans: Non-toxic to humans; spines may cause minor physical injury if handled improperly
Garden Uses & Culture
Culture: N/A
Usage: Ornamental xeriscaping cactus; produces edible, sweet fruit in mature plants
