Astrophytum caput-medusae
This species doesn’t resemble the typical star-shaped Astrophytum. It has a short, ribless stem and long, smooth tubercles covered in fine white fuzz. They can grow quite long over time, and older ones sometimes hold a few small spines. Paper-like bristles form at the base and tip of the plant, adding to its texture. Flowers are yellow with orange centers and appear along the tubercles.
Native to a small area in northeastern Mexico, this species grows in thorny scrubland under partial shade. It’s critically endangered in habitat.
These are seed-grown plants on their own roots—not grafted. They’re best in filtered sun or bright shade, with deep, fast-draining soil to support the taproot. Water regularly during the growing season (spring through late summer), then let it go dry through fall and winter. Tolerates light frost if kept dry.
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