PlantFun
Plant Needs
Sunlight
Requires full sun exposure to maintain its silvery leaf color and compact growth habit; tolerates partial shade but may become leggy
Watering
Deeply water once every 1–2 weeks during the growing season; reduce watering to once monthly in winter to avoid root rot
Temperature
Hardy to -10°C; tolerates extreme summer heat up to 38°C; protect young plants from prolonged frost exposure
Characteristics
- Leaf: Narrow, rigid, blue-gray to silvery-green leaves with sharp terminal spines; up to 60 cm long
- Stem: Thick, rough trunk covered with persistent dead leaf bases
- Flower: Creamy-white, bell-shaped flowers in erect, branching panicles up to 3 m tall
Care Guide
Watering
Deeply water when the top 15–20 cm of soil is completely dry
Fertilization
Apply diluted low-nitrogen succulent fertilizer once at the start of growth. Do not fertilize during winter dormancy
Eggshell powder topdressing：Crush fully dried eggshells into fine powder; sprinkle 1–2 tbsp around the base of the plant; avoid direct contact with leaves to prevent tissue burningPruning
- Remove dead, brown leaves from the base of the rosette to maintain a tidy appearance
- Trim spent flower stalks at the base after blooming to conserve the plant's energy
- Avoid cutting healthy leaves; only remove damaged, diseased, or overcrowded foliage
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; saponins may cause vomiting, diarrhea, reduced appetite, and lethargy
Humans: Contains saponins; ingestion may cause mild gastrointestinal upset including nausea and stomach pain
Garden Uses & Culture
Culture: N/A
Usage: Ornamental xeriscaping plant; drought-tolerant garden specimen
