Cactus Old Man
Cephalocereus senilis
houseplantOld Man Cactus is a distinctive columnar cactus named for its long, hair-like spines that resemble grey hair, creating a dramatic and otherworldly appearance. Native to Mexico, it grows slowly and can eventually reach 30 feet in nature but remains compact indoors for many years. It produces white flowers at night and requires excellent drainage and bright light.
Common Problems
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Care Guide
Toxicity
Non-toxic but spines are sharp; position carefully to avoid accidental injury.
Common Diseases
Common Pests
Seasonal Care
Resume regular watering and feeding as growth picks up.
Peak growing season. Water and feed regularly.
Reduce watering as growth slows. Stop heavy feeding.
Minimal watering and feeding. Protect from frost if needed.