Catalina Ironwood thrives with infrequent watering once established. Allow the soil to dry out completely between waterings. In containers, water thoroughly until it drains from the bottom.

Reduce watering significantly during winter dormancy to prevent root rot.

Prune Catalina Ironwood primarily to shape the tree, remove dead or diseased branches, and improve air circulation. Best performed in late winter or early spring before new growth begins.

Avoid excessive pruning, as it can impact the plant's natural form and flowering.

Catalina Ironwood is typically propagated from semi-hardwood cuttings taken in summer or fall. Root cuttings in a well-draining medium, providing bottom heat and high humidity.

Alternatively, seeds can be sown in autumn, requiring a period of cold stratification.

Container-grown Catalina Ironwood typically requires repotting every 2-3 years. Choose a pot that is only slightly larger than the current one.

Use a well-draining potting mix, such as a sandy loam or a cactus/succulent blend. Repot in spring before new growth appears.