Christmas Tree Cactus – Desert Horizon Nursery

Christmas Tree Cactus

Austrocylindropuntia subulata f. monstrose
Categories:
Cacti & Succulents  ·  
Prickly Pear
Light
Full sun
Water
Low water; water deeply when soil has dried completely, then allow it to dry again. Water very sparingly during cool winter weather.
Size
6-10 ft tall × 3-5 ft wide
Habit
Columnar cactus – branching
Toxicity
Non-toxic (spines)
Description
An unusual cactus with knobby, irregularly branching green stems and small, awl-shaped leaves, creating a miniature Christmas-tree silhouette.
Bloom Time
Rarely blooms (spring to summer)
Deciduous / Evergreen
Evergreen
Special Features
Architectural Form, Drought Tolerant
Growth Rate
Slow
Growth Habit
Columnar cactus – branching
Mature Size
6-10 ft tall × 3-5 ft wide
Flower Color
Red to orange
Foliage Color
Green
Landscape Use
Border / Bed, Cactus / Succulent Garden, Container / Patio, Specimen / Accent
Garden Style
Desert / Xeriscape
Soil
Sandy / Rocky, Well-Drained
Companion Plants
Golden barrel cactus, Red yucca, Santa Rita prickly pear
Non-toxic (spines)
Non-toxic (spines and glochids can injure)
Care Instructions

Light: Morning sun with light afternoon shade in Phoenix; gradually acclimate to stronger sun and protect from intense reflected heat.

Water: Low water; water deeply when soil has dried completely, then allow it to dry again. Water very sparingly during cool winter weather.

Soil: Very well-drained, gritty cactus soil; use raised beds or containers with drainage holes where native soil drains poorly.

Mature size: Typically 3–6 feet tall and 2–4 feet wide over time; often smaller in containers, with size varying by growing conditions and growth form.

Bloom: Rarely flowers in its monstrose form; mature plants may bloom in late spring or summer.

Evergreen / deciduous: Evergreen succulent stems; small leaves may drop with age, drought, or cold.

Growth rate: Slow to moderate; generally slower than the normal species.