Boob Cactus (Myrtillocactus geometrizans var. Fukurokuryuzinboku)

Boob Cactus

Myrtillocactus geometrizans var. Fukurokuryuzinboku

Its segmented, swollen stems resemble stacked geometric pillows. Succulent cactus shrub; common name: Boob Cactus.

Full sun
1/week
Beginner
🌱

Plant Needs

☀️
Sunlight Requires bright full sun for compact, geometric growth; tolerates partial shade but may lose its distinctive shape
💧
Watering Allow soil to fully dry between waterings; avoid overwatering to prevent root rot
🌡️
Temperature Thrives in warm, arid conditions; protect from frost below 5°C to prevent stem damage
🔍

Characteristics

  • Stem: Segmented, cylindrical stems with swollen, rounded sections; pale blue-green skin with small, sparse areoles
  • Spines: Short, pale yellow spines (3–5 per areole) that are barely visible
  • Flower: Small, white, star-shaped blooms clustered at mature stem tips
  • Fruit: Edible, purple berry-like fruits (rare in indoor cultivation)
🛠️

Care Guide

Watering

Water thoroughly when soil is completely dry

Fertilization

Diluted cactus fertilizer once monthly. Do not fertilize during winter dormancy

Eggshell powder topdressing:Crush dried eggshells into fine powder; sprinkle a thin layer on soil surface to boost calcium content and soil aeration
Pruning
  • Remove dead or damaged stem segments at the base with sterile shears
  • Trim overgrown stems to maintain the desired compact, geometric shape
  • Prune only during active growing season to minimize plant stress
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirms no toxic compounds for cats

Humans: Non-toxic to humans; fruits are edible when ripe

📖

Garden Uses & Culture

Culture: N/A

Usage: Ornamental succulent for rock gardens, container displays, or indoor decor