Spanish bayonet yucca with stiff dark green dagger leaves on slender trunks and white flowers

Yucca Aloifolia (Spanish Bayonet)

Yucca aloifolia
Categories:
Cacti & Succulents  ·  
Yucca & Accents
Light
Full sun
Water
Low water once established. Water deeply, then let soil dry thoroughly; provide occasional supplemental irrigation during prolonged summer heat. Reduce watering in winter.
Size
6-15 ft tall × 3-8 ft wide
Habit
Clustering succulent – trunk-forming
Toxicity
Toxic — Pets & Livestock
Description
Spanish bayonet, a trunk-forming yucca with dense rosettes of stiff, sword-shaped leaves ending in extremely sharp points.
Bloom Time
Spring to summer
Deciduous / Evergreen
Evergreen
Special Features
Architectural Form, Salt Tolerant, Showy Flowers
Growth Rate
Slow to moderate
Growth Habit
Clustering succulent – trunk-forming
Mature Size
6-15 ft tall × 3-8 ft wide
Flower Color
White to cream
Foliage Color
Dark green
Landscape Use
Container / Patio, Desert / Xeriscape, Specimen / Accent
Garden Style
Desert / Xeriscape
Soil
Alkaline Tolerant, Sandy / Rocky, Well-Drained
Companion Plants
Blackfoot daisy, Desert spoon, Golden barrel cactus, Red yucca, Santa Rita prickly pear
Toxic — Pets & Livestock
Foliage and roots toxic to pets and livestock if ingested (saponins)
Care Instructions

Light: Full sun to partial shade; afternoon shade helps prevent leaf scorch in Phoenix, especially near heat-reflecting walls.

Water: Low water once established. Water deeply, then let soil dry thoroughly; provide occasional supplemental irrigation during prolonged summer heat. Reduce watering in winter.

Soil: Very well-drained sandy or gravelly soil; tolerates alkaline conditions. Avoid poorly drained clay and persistently wet planting sites.

Mature size: Usually 10–15 feet tall and 3–5 feet wide per crown; branching, suckering clumps can spread 6–10 feet or more.

Bloom: Typically blooms in spring or summer once mature; established plants can flower again in subsequent years.

Evergreen / deciduous: Evergreen.

Growth rate: Slow to moderate, depending on irrigation and growing conditions.