Astrophytum asterias (Sea urchin cactus). USDA 9-11. Hardy to 20° F . Full sun to part shade. Solitary globular cactus, up to 6" in diameter. Little water summer, no water in winter. Flowers are yellow with a red center.  Seeds germinate rapidly. Origin: Northeastern Mexico, southern Texas.

Astrophytum capricorne

Astrophytum capricorne mix

Astrophytum capricorne v. major

Astrophytum capricorne v minor. USDA 9-10. Hardy to 20° F. Full sun to part shade.
Solitary columnar or globose cactus, up to 4' tall, 4" in diameter. Moderate water in summer, little to no water in winter.  3" flowers are yellow with a red center. Seeds germinate rapidly. Origin: Northern Mexico.

Astrophytum coahuilense. USDA 9b-10. Hardy to 20° F. Full sun to part shade. Solitary columnar or globose cactus, up to 2' tall, 8" in diameter. Moderate water in summer, no water in winter.  Flowers are yellow with a red center.  Seeds germinate rapidly. Origin: Highlands of central and northern Mexico.

Astrophytum columnaris

Astrophytum capricorne var. crassispinum

Astrophytum hybrid capas

Astrophytum hybrids. Capricorne / myriostigma / ornatum / senile. All hybrid mix

Astrophytum myriostigma

 Astrophytum myriostigma mix

Astrophytum myriostigma v. columnare

Astrophytum myriostigma v. nudum

Astrophytum myriostigma v. potosinum