Water sparingly, allowing the soil to dry out completely between waterings. Overwatering is detrimental, especially during cooler months. Ensure excellent drainage to prevent root rot.

Reduce watering significantly in winter to mimic its natural dormancy period.

Pruning is generally not required for Astrophytum caput-medusae as it is a slow-growing, naturally compact cactus. Remove any dead or damaged parts promptly with a clean knife to prevent disease.

Focus on maintaining its natural form.

Propagation is primarily done through seed. Sow seeds on a well-draining cactus mix and keep them warm and lightly moist.

Grafting onto a suitable rootstock is another method for faster growth, though less common for home growers.

Repot every 2-3 years or when the plant becomes root-bound. Use a very porous, gritty cactus mix with excellent drainage. Repotting is best done in spring, just as new growth begins.

Handle with care to avoid damaging the delicate root system.