Water Diplolaena andrewsii moderately during its establishment phase. Once established, it is highly drought-tolerant and prefers to dry out between waterings.

Overwatering can lead to root rot, so ensure well-draining soil and water only when the top few centimeters of soil are dry.

Prune Diplolaena andrewsii lightly after flowering to maintain a tidy shape and encourage bushier growth. Remove any dead, damaged, or crossing branches at any time.

Avoid heavy pruning, as this can reduce flowering potential for the following season.

Propagate Diplolaena andrewsii from semi-hardwood cuttings taken in late summer or early autumn. Dip cuttings in rooting hormone and plant in a well-draining medium.

Maintain consistent moisture and warmth until roots form, which can take several weeks.

Repot Diplolaena andrewsii only when necessary, typically when the plant becomes root-bound. Choose a pot that is only slightly larger than the current one.

Use a well-draining potting mix, such as a cactus or succulent blend, to prevent waterlogging.