Water Cassinia compacta regularly during its growing season, ensuring the soil dries out slightly between waterings. Reduce watering significantly in winter, allowing the soil to remain dry.

Overwatering can lead to root rot, so good drainage is essential.

Prune Cassinia compacta after flowering to maintain its shape and encourage bushier growth. Remove any dead, damaged, or crossing branches at any time of year.

Heavy pruning should be done in late winter or early spring before new growth begins.

Propagate Cassinia compacta from semi-hardwood cuttings taken in summer. Root the cuttings in a well-draining propagation mix, keeping them in a warm, humid environment until established.

Seed propagation is also possible but can be slower.

Repot Cassinia compacta every 2-3 years, or when root-bound, preferably in spring. Use a well-draining potting mix. Ensure the new pot is only slightly larger than the previous one to avoid waterlogged soil conditions.