Origin of Name

The genus name "Astrophytum" is derived from the Greek words for star ("astron") and plant ("phyton"), referencing the star-like shape of this cactus. "Asterias" further emphasizes its resemblance to a sea star. The cultivar name 'Ooibo ' translates from Japanese to mean big pronounced scales (areoles) on the plant's surface and Kabuto means "helmet".The descriptor "Black/Purple Skin" highlights the distinctive coloration of this cultivar's flesh, a sought-after trait among collectors and enthusiasts.

Technical Description of Plant

Astrophytum asterias cv. 'Ooibo Kabuto' (Black/Purple Skin) is celebrated for its compact, globular to slightly flattened form, reaching up to 6 inches in diameter. This cultivar stands out for its smooth, glossy surface devoid of spines, showcasing a unique black or deep purple coloration that sets it apart from the typical green varieties. The areoles are white and woolly, contrasting starkly against the dark flesh, and are spaced in a pattern that enhances the cactus's star-shaped appearance. It is hard to define how large an areole needs to be to be considered an Ooibo. This cactus has a classic, flattened globe shape with smooth, ribbed surfaces, making it resemble a sea urchin. Astrophytum asterias 'OOIBO BLACK/PURPLE' is a collector's dream, perfect for adding a dramatic touch to any succulent collection. While it blooms, this variety produces large, bright yellow flowers that offer a striking contrast to the dark body, although flowering is infrequent and depends on the plant's age and growing conditions.

Origin of Plant

Astrophytum asterias, is native to small areas in the Rio Grande Valley of Texas in the United States and northeastern Mexico. It has adapted to grow in arid desert conditions. The 'Ooibo Kabuto' cultivar, particularly noted for its black or purple skin, is a result of selective breeding to accentuate its unique coloration and surface texture.

Conservation Status

The wild type of Astrophytum asterias is listed as Near Threatened due to habitat loss, overcollection, and other environmental pressures. However, the 'Ooibo Kabuto' cultivar is primarily propagated in cultivation, which can help alleviate demand for wild specimens when sourced responsibly.

Care Instructions

Astrophytum asterias cv. 'Ooibo Kabuto' (Black/Purple Skin) thrives under bright, indirect light or partial sun exposure to maintain its unique coloration without risking sunburn. It prefers a well-draining soil mix designed for cacti and succulents. Water sparingly, allowing the soil to dry completely between waterings, and reduce watering in the cooler dormant period to prevent root rot. Protect from frost and extreme cold, as it is not frost-tolerant. Fertilize lightly with a cactus-specific fertilizer during the active growing season to support health and potential flowering.