Water Melocactus acunae thoroughly when the soil is completely dry. Reduce watering significantly during winter dormancy to prevent root rot.

Ensure excellent drainage to avoid waterlogged conditions, as this cactus is highly susceptible to overwatering.

Pruning is generally not required for Melocactus acunae, as it maintains a compact, globular shape. Remove any dead or damaged parts promptly with a clean, sharp knife or shears.

This helps maintain the plant's health and aesthetic appeal.

Propagation is primarily done through seeds, which require warm temperatures and bright light to germinate. Cuttings are less common and can be difficult to root successfully.

Ensure cuttings are allowed to callous before planting.

Repot Melocactus acunae every 2-3 years or when it outgrows its current container. Use a well-draining cactus mix. Repot in spring before the active growing season begins.

Handle with care to avoid damaging the spiny body and roots.