PlantFun
Plant Needs
Sunlight
Full sun to partial shade; thrives in intense direct sun in arid climates; tolerates filtered shade in hot, humid regions
Watering
Allow soil to dry completely between waterings; avoid overwatering to prevent root rot, especially in cool, damp conditions
Temperature
Hardy to -10°C; tolerant of high summer heat up to 35°C; protect from prolonged, severe frost to prevent leaf damage
Characteristics
- Leaf: Sword-shaped, rigid, sharp-tipped, blue-green, arranged in dense rosettes at stem tops
- Flower: Creamy-white, bell-shaped, clustered in tall, upright panicles up to 1.5 m tall
- Stem: Thick, woody trunk covered in persistent dead leaf bases
Care Guide
Watering
Water deeply when top 15–20 cm of soil is completely dry; reduce watering during rainy spells
Fertilization
Apply diluted balanced liquid fertilizer once monthly. Use a low-nitrogen fertilizer to promote healthy foliage and flowering
Eggshell powder topdress：Crush dried, rinsed eggshells into fine powder; sprinkle 1 teaspoon per plant onto topsoil and work lightly into the surface to avoid disturbing rootsPruning
- Remove dead, brown, or damaged leaves at the base to maintain rosette shape and improve airflow
- Trim spent flower stalks close to the rosette after blooming to redirect energy to new growth
- Cut back overgrown or leaning stems in early spring to encourage compact, upright growth
- Remove suckers at the base if desired to maintain a single-trunk form
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; saponins may cause vomiting, diarrhea, hypersalivation, and lethargy
Humans: Contains saponins; ingestion may cause mild gastrointestinal upset including nausea and stomach pain
Garden Uses & Culture
Culture: Symbolizes resilience and protection due to its sharp, defensive foliage
Usage: Ornamental landscaping for xeriscaping; historically used by Indigenous peoples for fiber production and medicinal teas
