Giant Yucca (Yucca gigantea)

Giant Yucca

Yucca gigantea

Sharp, sword-like leaves frame a sculptural desert silhouette. Evergreen succulent tree.

Full sun
1/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates intense direct sunlight in arid climates; avoid prolonged deep shade to prevent leggy growth
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Watering Water deeply once weekly during active growth; allow soil to dry completely between waterings to prevent root rot
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Temperature Tolerates brief light frosts down to 7°C; optimal growth range 18–30°C; protect from temperatures below 5°C to avoid tissue damage
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Characteristics

  • Leaf: Long, rigid sword-shaped leaves with smooth, spineless margins; blue-green to dark green, arranged in dense rosettes at stem tips
  • Flower: Creamy white, bell-shaped blooms in upright, 1 m tall panicles
  • Stem: Thick, woody trunk with peeling brown bark; branching may develop with maturity
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Care Guide

Watering

Water deeply when top 5–7 cm of soil is dry; reduce frequency during extreme heat to avoid sunscald

Fertilization

Apply diluted balanced liquid fertilizer once monthly. Avoid fertilizing during dormant winter months

Eggshell powder top dressing:Crush dried eggshells to a fine powder; sprinkle 1–2 tbsp around the base of the plant; water lightly to integrate the powder into the topsoil
Pruning
  • Remove brown, dead leaves from the base of rosettes to maintain a tidy appearance and improve airflow
  • Trim spent flower stalks at the base after blooming to redirect energy to foliage growth
  • Cut back overgrown stems in early spring to control size and encourage branching
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic due to saponins; may cause vomiting, diarrhea, depression, or loss of appetite

Humans: Ingestion may cause mild oral irritation, nausea, or stomach upset in large quantities

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Garden Uses & Culture

Culture: Symbolizes resilience and endurance in arid landscape design; often used in xeriscaping for low-water gardens

Usage: Ornamental tree for outdoor gardens and indoor decoration; historical use of leaf fibers for textiles and cordage