Large size and stable 3 ribs.

Origin of Name

Astrophytum myriostigma 'Tricostatum' is a fascinating cultivar within the Astrophytum genus, which is renowned for its unique and striking cacti. The genus name "Astrophytum" is derived from the Greek words "astron," meaning star, and "phyton," meaning plant, reflecting the star-like shape of many species within this genus. The species name "myriostigma" translates to "thousand spots," referring to the white, flecked areoles scattered across the plant's surface, giving it a distinctive, speckled appearance. The term 'Tricostatum' comes from Latin, with "tri" meaning three and "costatum" referring to ribs, indicating this cultivar's unusual characteristic of having three ribs, unlike the typical five to eight ribs found in the standard Astrophytum myriostigma.

Technical Description of Plant

Astrophytum myriostigma 'Tricostatum' is a rare and visually striking cactus, characterized by its three-ribbed, columnar body. This deviation from the typical multi-ribbed form of Astrophytum myriostigma makes 'Tricostatum' a highly sought-after cultivar among cactus enthusiasts. The plant's body is green, covered with a dense pattern of white dots, which contrast beautifully against the green skin. It can grow up to 1 meter in height, though it remains shorter and more compact in cultivation. The 'Tricostatum' blooms with large, yellow flowers at the top of the cactus during the spring and summer, adding to its decorative appeal. The flowers are followed by red, edible fruits.

Origin of Plant

The Astrophytum myriostigma 'Tricostatum' is a cultivated variety rather than a naturally occurring species. It has been selectively bred by enthusiasts to express the unique three-ribbed characteristic. The original species, Astrophytum myriostigma, is native to the highlands of northeastern and central Mexico, where it grows in arid conditions on limestone hills. The 'Tricostatum' cultivar retains many of the original species' traits but showcases the distinctive rib structure as a result of genetic mutation or selective breeding practices.

Conservation Status

As a cultivar, Astrophytum myriostigma 'Tricostatum' does not have a conservation status. It is primarily grown in cultivation and not found in the wild. The conservation efforts typically focus on protecting the natural habitats of the wild species from which such cultivars are derived. Sustainable cultivation and propagation of cacti like 'Tricostatum' can help reduce the demand for wild-collected plants, contributing indirectly to conservation efforts.

Care Instructions

Astrophytum myriostigma 'Tricostatum' requires care similar to that of other Astrophytum species. It thrives in bright light, with some direct sunlight to encourage healthy growth and flowering. However, it should be protected from intense, scorching midday sun in hot climates. Use a well-draining soil mix, preferably one formulated for cacti and succulents, to prevent root rot. Water moderately during the growing season, allowing the soil to completely dry out between waterings. In winter, reduce watering significantly to mimic the plant's natural dormant period. Fertilize lightly with a cactus-specific fertilizer during the growing season to support growth and flowering. Astrophytum myriostigma 'Tricostatum' is not frost-tolerant and should be protected from temperatures below 10°C (50°F). With proper care, this unique cactus cultivar can be a standout addition to any collection, captivating with its rare form and beautiful blooms.