Bolusanthus speciosus prefers consistently moist soil during its active growing season. Water thoroughly when the top few centimeters of soil feel dry.

Reduce watering significantly in winter, allowing the soil to dry out more between waterings to prevent root rot. Avoid waterlogging at all costs.

Prune Bolusanthus speciosus to maintain its desired shape and size, or to remove any dead, damaged, or crossing branches. The best time to prune is after flowering in late spring or early summer.

Heavy pruning is generally not required, but can be done to rejuvenate older plants.

Bolusanthus speciosus can be propagated from seeds sown in spring, often requiring scarification or stratification to aid germination. It can also be propagated from semi-hardwood cuttings taken in summer.

Ensure cuttings are treated with rooting hormone and kept in a humid environment.

Repot young Bolusanthus speciosus plants every 1-2 years in spring, or when they become root-bound. Use a well-draining potting mix. Mature plants can be repotted less frequently, typically every 3-4 years.

Choose a pot only slightly larger than the current one to avoid overwatering.