Mammillaria grusonii
Care, watering, light and tips for Mammillaria grusonii on Floravia.
Quick facts
- Family: Cactaceae
- Difficulty: Easy to care for
- Watering: every 20 days
- Light: Full sun
- Temperature: 10–40 °C
About Mammillaria grusonii
Mammillaria grusonii, also known as the Sierra Bola Cactus, is a medium to large globular cactus that can become columnar over time. It is distinguished by its prominent tubercles and golden or yellowish spines that cover its surface, creating a bright and dense appearance. It is ideal for rock gardens, cactus collections, or as an accent plant in wide pots.
Native range
Northeastern Mexico, specifically in Coahuila and Nuevo León.
Care tips
It requires full sun to maintain its compact shape and spine coloration. Watering should be moderate in spring and summer, allowing the substrate to dry completely between waterings, and almost none in winter. It prefers a very well-drained, sandy or mineral substrate, specific for cacti. Avoid overwatering, as it is the most common cause of root rot in this species.
How to save a dying Mammillaria grusonii
- Warning signs
- Stem softening, dark spots, rot from base, severe wrinkling without recovery after watering.
- First aid
- Inspect roots for rot. Cut soft parts with clean knife. Apply fungicide to cuts. Replant in dry, well-draining substrate.
- What kills it
- Overwatering, especially in winter. Moisture-retentive substrate. Lack of light weakening the plant.
- Can it be saved?
- Yes, if rot hasn't affected the growth apex or most of the body. Quick action is key.