Water thoroughly when the soil is completely dry. Reduce watering significantly during winter dormancy to prevent rot. Ensure excellent drainage to avoid waterlogged roots, which can lead to fungal diseases.

Overwatering is the most common cause of death for this species.

Pruning is generally not required for Astrophytum myriostigma. Removal of old or damaged parts is rarely necessary.

If a section needs to be removed due to rot, use a sterile knife and allow the cut to callus over before replanting.

Propagated primarily by seed, which requires warm temperatures and bright light to germinate. Cuttings can also be taken, but require careful drying to prevent rot before planting in a well-draining medium.

Repot every 2-3 years or when the cactus outgrows its container. Use a gritty, well-draining cactus mix. Repot in spring just as new growth begins.

Handle with care to avoid damaging the ribs or spines of this slow-growing species.