Water sparingly once the soil has completely dried out. Phagnalon saxatile is drought-tolerant and prefers dry conditions. Overwatering can lead to root rot, especially in poorly draining soil.

Ensure good drainage to prevent waterlogged roots.

Prune lightly in spring or after flowering to maintain shape and remove any dead or straggly stems. This encourages bushier growth. Avoid heavy pruning, as it can stress the plant.

Deadheading spent flowers can improve appearance.

Propagate from seed sown in spring or from semi-hardwood cuttings taken in late summer. Seeds require a period of cold stratification. Cuttings should be rooted in a well-draining, sandy mix in a warm, humid environment.

Repot infrequently, only when root-bound, typically every 2-3 years. Use a well-draining potting mix, such as a cactus or succulent blend, with added grit or perlite. Repot in spring before new growth begins.