Allow the soil to dry out completely between waterings. Harrisia brookii prefers to be on the drier side, so err on the side of underwatering.

During the winter dormancy period, reduce watering significantly, providing only enough to prevent the soil from becoming bone dry.

Pruning is generally not necessary for Harrisia brookii unless it becomes overgrown or develops damaged stems. If pruning is required, use a sharp, sterile knife or pruning shears to remove unwanted sections.

Prune in spring before new growth begins.

Harrisia brookii is typically propagated by stem cuttings. Allow cuttings to callus for a few days before planting them in well-draining cactus or succulent potting mix.

Roots will usually form within a few weeks when kept in warm conditions.

Repot Harrisia brookii every 2-3 years or when it outgrows its current container. Use a well-draining cactus or succulent potting mix.

Choose a pot that is only slightly larger than the current one, ensuring it has drainage holes to prevent waterlogging.