PlantFun
Plant Needs
Sunlight
Full direct sunlight for 6–8 hours daily; provide partial shade during midday in extreme summer heat to prevent sunscald
Watering
Water deeply only when the soil is completely dry; avoid overwatering to prevent root rot in humid conditions
Temperature
Thrives in 18–30°C; protect from temperatures below 10°C to avoid frost damage to stem tissue
Characteristics
- Leaf: Reduced to sharp, yellowish spines (1–2 cm long) covered by dense white woolly hairs
- Flower: Small, white, nocturnal blooms clustered near the stem apex
- Stem: Cylindrical green stem with 15–20 longitudinal ribs; areoles produce woolly hairs and spines
Care Guide
Watering
Water once every 10–14 days 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 topdressing：Crush dried eggshells into fine powder; dust lightly on soil surface to add calcium without burning delicate rootsPruning
- Remove dead, discolored stem segments to maintain plant health and appearance
- Trim overgrown woolly hairs only if they block light to lower stem areoles
- Handle with thick gloves to avoid spine punctures during maintenance
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic; physical irritation from spine punctures possible
Humans: No systemic toxicity; physical irritation from spine punctures may occur
Garden Uses & Culture
Culture: N/A
Usage: Ornamental succulent for xeriscaping, indoor cactus collections, and desert-themed gardens
