Mammillaria poselgeri 'Fishhook Cactus'
- Light: Bright light with ample airflow.
- Water: Water thoroughly when soil is dry to touch.
- Extras: Requires porous cactus soil with excellent drainage.
A dark green, cylindrical cactus covered in bumpy tubercles. Its spines can be white to coppery brown and have a curled, fishhook shape.