Astrophytum myriostigma cv. Onzuka quadricostatum

Family

Cactaceae

Native

Japan

Description

Astrophytum Onzuka stands out as one of the most exquisite and coveted cultivars of the myriostigma species. Its epidermis is densely speckled with snowy-white patterns reminiscent of the ‘kabuto’ asterias, with each plant displaying unique and evolving designs as it matures.

Characterized by a symmetrical star shape featuring 5 to 6 prominent ribs and a smooth, spineless surface, it presents a sculptural form. The stem ranges from spherical to short cylindrical, measuring 8–10 cm in diameter, with a dark green epidermis occasionally adorned with sparse white hair tufts.

Its striking pale-yellow flowers, often exceeding 5 cm in width, add to its ornamental appeal.

Environment

Like most cacti they're drought tolerant and need very little care and attention to grow well. Not enough sunlight and over-watering are common mistakes.

Plenty of sunshine will keep this cacti more than happy. In a glass room you may have to provide some shade during a hot summers day to prevent sunburn

Feed every 4 weeks with a Nitrogen-poor and Potassium & Phosphorus-rich fertilizer during summer

Landscape Uses

It is an excellent plant for garden rockery settings, desert type landscapes, patios and botanical gardens