PlantFun
Plant Needs
Sunlight
Requires full direct sunlight for 6–8 hours daily; tolerates partial shade during extreme midday summer heat
Watering
Water deeply only when the entire soil medium is completely dry; avoid overwatering to prevent root rot
Temperature
Thrives in 18–30°C; tolerates brief light frost down to 5°C but requires protection from prolonged cold below 10°C
Characteristics
- Leaf: Modified into small, sharp spines along 4–8 prominent vertical ribs
- Flower: Large, fragrant white funnel-shaped blooms that open at night
- Stem: Thick, fleshy green columnar stems with a waxy cuticle to retain moisture
Care Guide
Watering
Water every 10–14 days when soil is fully dry
Fertilization
Diluted low-nitrogen cactus fertilizer once monthly. Use fertilizer with balanced phosphorus and potassium to support flowering
Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle lightly on soil surface once every 3 months; avoid direct contact with stems to prevent irritationPruning
- Remove dead or damaged stem segments in early spring to maintain plant health
- Trim overgrown branches to shape the cactus and improve airflow
- Disinfect pruning tools with rubbing alcohol before use to prevent disease transmission
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats
Humans: No known toxic effects for humans; ripe fruit is edible
Garden Uses & Culture
Culture: Symbolizes endurance and desert vitality; ripe fruit is a traditional food source in native South American regions
Usage: Ornamental landscape plant; edible red, pitaya-like fruit when fully ripe
