🌵 Astrophytum myriostigma 'Onzuka' (Onzuka Bishop's Cap Cactus) 🌵 Astrophytum myriostigma 'Onzuka' (Onzuka Bishop's Cap Cactus)

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Description

✨ Product Overview

Meet the Onzuka Bishop's Cap Cactus — a premium, spineless globular cactus that’s a must-have for any serious succulent collection! 🤩
This elegant cactus features a plump, deep green spherical body with thick, rounded vertical ribs that form a bold, sculptural star shape. Unlike standard bishop's cap, the 'Onzuka' variety has smooth, almost spineless ribs with prominent white woolly tufts at the top, creating a clean, modern, architectural appearance. It grows slowly into a solitary, striking sphere, perfect for windowsills, desk displays, or as a focal point in succulent arrangements. In spring, it blooms with large, fragrant pale yellow flowers that crown the top, adding a delicate contrast to its bold form. Every plant has a unique rib count and growth pattern, making each piece a one-of-a-kind living artwork. 🌿
Feature Description
Botanical Name Astrophytum myriostigma 'Onzuka'
Common Name Onzuka Bishop's Cap Cactus, Onzuka Star Cactus, Giant Rib Bishop's Cap
Family Cactaceae
Genus Astrophytum
Bloom Season Spring 🌸
Flower Color Large, fragrant pale yellow blooms
Growth Habit Globular, columnar with age, solitary
Growth Rate Slow-growing
Mature Size Up to 15-20 cm tall, 10-15 cm in diameter
Hardiness Zone USDA 9a to 11b
Native Area Central and Northern Mexico (cultivated premium variety)
Sun Exposure Full sun (6+ hrs.) / Bright indirect light
Dormancy Winter (cool, dry period) ❄️

💧 Care Guide (Beginner-Friendly!)

This hardy, spineless cactus is extremely easy to care for, even for new plant parents:
  • ☀️ Sunlight: Thrives in bright, full sun to enhance its rib structure and encourage abundant flowering. Protect from intense midday sun in summer to prevent sunburn.
  • 💦 Watering: Follow the "soak and dry" method. Water thoroughly only when the soil is completely dry (every 2-3 weeks in growing season). Keep nearly dry in winter during dormancy to avoid root rot.
  • 🌡️ Temperature: Ideal growing temperature 18-30°C (65-86°F). Can tolerate short periods down to 5°C (41°F) when dry. Protect from frost!
  • 🪴 Soil: Use a fast-draining cactus/succulent mix with high grit content (perlite, pumice, volcanic rock) for excellent aeration.
  • ⚠️ Special Note: This cactus is completely spineless! It’s safe to handle, making it perfect for households with kids and pets. A cool, dry winter rest will trigger more blooms in spring.
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