Plant Acanthus with a handful of well-rotted garden compost mixed with the excavated soil and firm the conditioned soil around the plant and water in well. It thrives best in dappled shade and although it will take full sun, the leaves may scorch.

Slugs and snails love this plant, so pick them off regularly. Plant it as a specimen plant in a mixed border, and give it plenty of room to spread itself out.

To minimise the risk of powdery mildew taking hold ensure that the plant is watered well during hot, dry spells. To rejuvenate and minimise congestion, lift and divide large clumps in autumn or spring.