Water sparingly once the soil has dried out completely. Santolina ageratifolia is drought-tolerant and prone to root rot if overwatered.

Allow the soil to dry thoroughly between waterings, especially during cooler months. Ensure good drainage to prevent waterlogging.

Prune lightly after flowering to maintain a compact shape and encourage bushier growth. Remove spent flower stalks. Heavy pruning should be avoided, especially into old wood, as it may not regrow.

Light trims keep the plant tidy and prevent it from becoming straggly.

Propagate from semi-hardwood cuttings taken in late summer or early autumn. Insert cuttings into a well-draining compost mixture. Keep moist and place in a warm location with good light.

Rooting typically occurs within a few weeks, after which they can be potted on.

Repot only when necessary, typically every 2-3 years, preferably in spring. Use a well-draining potting mix, such as a sandy loam. Avoid excessively large pots, as this can lead to overwatering issues.

Ensure the new pot has adequate drainage holes.