Water thoroughly when the soil is completely dry, typically during the growing season (spring to early autumn). Reduce watering significantly in winter, allowing the plant to enter dormancy.

Ensure good drainage to prevent root rot, as this cactus is sensitive to overwatering.

Pruning is generally not required for Gymnocalycium amerhauseri, as it maintains a compact, spherical shape. Remove any dead or damaged plant parts using a clean, sharp knife or scissors.

This also helps prevent potential disease spread.

Propagate primarily through offsets (pups) that naturally form at the base of the mother plant. Gently detach a healthy offset with a sharp knife and allow the cut surface to callus over for several days before potting in well-draining cactus mix.

Repot every 2-3 years or when the plant outgrows its container. Use a gritty, fast-draining cactus soil mix. Choose a pot that is only slightly larger than the current one. Repot in spring before active growth begins.