Armeria filicaulis prefers well-drained soil and should be watered moderately during the growing season. Allow the soil to dry out slightly between waterings to prevent root rot.

Reduce watering significantly in winter when the plant is dormant, providing only enough to keep the soil from becoming completely dry.

Prune Armeria filicaulis after flowering to maintain a tidy appearance and encourage reblooming. Deadhead spent flower stalks by cutting them back to the base of the plant.

Lightly trim any overgrown or straggly foliage to shape the plant. Avoid heavy pruning, as this can disrupt its natural form.

Propagation is typically done by division in spring or autumn. Carefully lift the plant and separate clumps, ensuring each division has roots and foliage.

Alternatively, take basal cuttings in late spring or early summer. Plant cuttings in a well-draining medium and keep them moist until established.

Repot Armeria filicaulis when it becomes root-bound, usually every 2-3 years. Spring is the ideal time for repotting. Use a free-draining compost mix, such as a blend of potting soil with added grit or sand.

Ensure the new pot has adequate drainage holes to prevent waterlogging.