Water thoroughly when the soil is completely dry, typically every 2-4 weeks during the growing season (spring/summer).

Reduce watering significantly in fall and winter, allowing the soil to dry out between waterings to prevent root rot. Overwatering is the most common cause of death.

Pruning is generally minimal for Myrtillocactus geometrizans. Remove any dead, damaged, or diseased stems. If the plant becomes too large or unwieldy, branches can be cut back.

Use a clean, sharp knife or saw and allow cuts to callus over before watering.

Propagate from stem cuttings. Allow cuttings to dry and callus for several days to a week before planting in well-draining cactus soil. Rooting typically occurs within a few weeks to months.

Provide bright, indirect light and minimal water until roots establish.

Repot every 2-3 years, or when the plant outgrows its container. Choose a pot with drainage holes and use a gritty, well-draining cactus mix. Handle with care to avoid spine damage.

Repot in spring before the active growing season begins.