Water thoroughly when the soil is completely dry. Overwatering is detrimental, leading to root rot. Reduce watering significantly during winter dormancy to prevent fungal issues.

Ensure good drainage to avoid waterlogged conditions.

Pruning is generally not required for Gymnocalycium andreae. Removal of dead or damaged stems can be done if necessary. This is typically performed with a clean, sharp knife or scissors to minimize disease transmission.

Propagation is best achieved through seed sowing or offsets. Sow seeds in a well-draining cactus mix and keep them warm and lightly moist.

Offsets can be detached from the parent plant and allowed to callus before planting.

Repot young plants annually or every two years, and mature plants less frequently. Repot in spring using a gritty, fast-draining cactus mix. Ensure the pot has drainage holes to prevent root rot.

Handle with care to avoid spine damage.